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Satoshi Hamai Last modified date:2020.06.29

Associate Professor / Faculty of Medical Sciences


Graduate School


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Homepage
https://kyushu-u.pure.elsevier.com/en/persons/satoshi-hamai
 Reseacher Profiling Tool Kyushu University Pure
http://www.ortho.med.kyushu-u.ac.jp/
Department of Orthopaedic Surgery, Kyushu University .
https://kyushu-u.pure.elsevier.com/en/persons/satoshi-hamai/publications/?ordering=publicationYearThenTitle&descending=true
Pure .
Phone
092-642-5488
Fax
092-642-5507
Academic Degree
MD, PhD
Country of degree conferring institution (Overseas)
No
Field of Specialization
Orthopaedic Surgery, Hip Surgery, Knee Surgery, Adult Reconstruction Surgery, Arthroplasty, Osteotomy, Arthroscopy, Sports Orthopaedics
Research
Research Interests
  • 3D kinematic analysis of total knee arthroplasty
    keyword : total knee arthroplasty, 3D kinematic analysis
    2004.04.
  • Contact stress analyses using knee simulator with special interest in design of total knee arthroplasty
    keyword : Contact stress, Knee simulator, Total knee arthroplasty
    2006.04.
  • Sports activities after total knee arthroplasty
    keyword : Joint arthroplasties, Sports activities
    2007.03.
  • 3D kinematic analysis of normal knee and knee osteoarthritis
    keyword : normal knee, knee osteoarthritis, 3D kinematic analysis
    2008.04.
  • Clinical outcomes following hip and knee arthroplasties as well as hip and knee osteotomies
    keyword : Clinical outcome、Arthroplasty、Osteotomy
    2011.04.
  • 3D kinematic analysis of normal hip, hip osteoarthritis, and replaced hip
    keyword : normal hip, hip osteoarthritis, total hip arthroplasty, 3D kinematic analysis
    2012.05.
  • Sports activities after total hip arthroplasty and periacetabular osteotomy
    keyword : total hip arthroplasty, periacetabular osteotomy, sports activities
    2012.05.
  • Dynamic hip kinematics before and after periacetabular osteotomy in patients with dysplasia
    keyword : periacetabular osteotomy, kinematics
    2015.04.
  • Visualization of femoroacetabular impingement using image-matching techniques
    keyword : Femoroacetabular impingement, Visualization, 3D kinematic analysis
    2017.01.
  • Physical behaviour after total joint arthroplasties and osteotomies
    keyword : total joint arthroplasties, osteotomies, physical behaviour
    2017.05.
Academic Activities
Papers
1. Keisuke Komiyama, Satoshi Hamai, Satoru Ikebe, Kensei Yoshimoto, Hidehiko Higaki, Kyohei Shiomoto, Hirotaka Gondo, Daisuke Hara, Yifeng Wang, Yasuharu Nakashima, In vivo kinematic analysis of replaced hip during stationary cycling and computer simulation of optimal cup positioning against prosthetic impingement, Clinical Biomechanics, 10.1016/j.clinbiomech.2019.05.035, 68, 175-181, 2019.08, Background: Dynamic hip kinematics during stationary cycling after total hip arthroplasty (THA) have been unclear. Furthermore, no computer simulation of optimal cup position based on in vivo kinematics has yet been assessed. Methods: This study consisted of 7 patients who underwent unilateral primary THA for symptomatic osteoarthritis. Using a flat-panel X-ray detector, continuous radiographs were obtained during stationary cycling. We analyzed the three-dimensional replaced hip kinematics from the top to the bottom position of the crank using image-matching techniques and quantified minimum liner-to-stem neck distance. Simulation analyses with in vivo kinematics were performed to examine patient-specific optimal cup placement against prosthetic impingement. Findings: During stationary cycling, pelvis showed 27.1° of posterior tilt on average without significant change. Hip flexed by 59.4° and 19.3° on average at the top and bottom positions, respectively. Minimum liner-to-neck distance was 8.8 mm on average at the bottom position. Liner-to-neck, bone-to-bone, or bone-to-component impingement was not observed at any positions in any hips. Simulation analysis of cup placement showed that larger cup anteversion, inclination, and use of elevated liner significantly decreased the minimum distance between posterior liner and stem neck. Cup anteversion of more than 30° with elevated liner could cause posterior liner-to-neck impingement at bottom position. Interpretation: Stationary cycling after THA provides no excessive hip range of motion or liner-to-neck contact. Cup placement and use of elevated liner significantly influence the minimum liner-to-neck distance, in some cases simulating posterior prosthetic impingement..
2. Masato Kiyohara, Satoshi Hamai, Daisuke Hara, Daisuke Fujiyoshi, Satoru Harada, Kenichi Kawaguchi, Yasuharu Nakashima, Do component position and muscle strength affect the cup-head translation during gait after total hip arthroplasty?, European Journal of Orthopaedic Surgery and Traumatology, 10.1007/s00590-019-02443-1, 29, 6, 1263-1269, 2019.08, Introduction: This study examined whether the component position or muscle strength affects the cup-head translation under in vivo weight-bearing conditions after total hip arthroplasty (THA). We hypothesized that there was a correlation between the hip offset or abductor strength and cup-head translation during gait. Materials and methods: We prospectively evaluated 31 patients undergoing unilateral cementless primary THA. The cup height, cup/stem offset, and limb length discrepancy were measured on anterior–posterior bilateral hip radiographic images. The isometric muscle strength of the lower limbs was quantified using a handheld dynamometer. Continuous radiographic images were recorded during gait, and cup-head translation was analysed using a computer-assisted method. Results: The average cup height, cup/stem offset, and limb length discrepancy were − 3.8 ± 5.1 mm, 1.2 ± 5.2 mm/− 0.7 ± 7.7 mm, and − 2.1 ± 5.2 mm, respectively. The average hip abductor/flexor and knee extensor strength were 86% ± 18%/85% ± 17% and 88% ± 17% of the contralateral healthy hip, respectively. The average cup-head translation during swing phase of gait was − 0.003 ± 0.31 mm. Multiple regression analyses found no significant independent predictors of cup-head translation (p > 0.05). Conclusions: The component position or muscle strength did not significantly influence cup-head translation during gait after well-positioned primary THA..
3. Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondoh, Kyohei Shiomoto, Satoru Ikebe, Daisuke Hara, Keisuke Komiyama, Yasuharu Nakashima, Dynamic hip kinematics before and after periacetabular osteotomy in patients with dysplasia, Journal of Orthopaedic Science, 10.1016/j.jos.2019.03.019, 25, 2, 247-254, 2020.03, Background: We prospectively analyzed the hip kinematics in patients with developmental dysplasia of the hip (DDH) before and after periacetabular osteotomy (PAO) and in healthy subjects while squatting to determine the influence of coverage of the femoral head on hip kinematics. Methods: 14 hips in 14 patients with DDH and 10 hips in 10 volunteers were included. Continuous radiographs while squatting and computed tomography images were obtained to assess the in vivo kinematics of the hip and the rim-neck distance using density-based 3D-to-2D model-to-image registration techniques. Results: The maximum hip flexion angles were 100.4° and 94.9° before and after PAO (p = 0.0863), respectively. The maximum hip flexion angles after PAO did not significantly differ from those of normal hips (102.2°; p = 0.2552). The hip abduction angles at maximum hip flexion were 31.7° and 26.2° before and after PAO (p = 0.1256), respectively. The rim-neck distance decreased from averaged 12.2 mm–8.9 mm (p = 0.0044) after PAO. The lateral center edge angle (LCEA) and anterior center edge angle (ACEA) significantly improved 14.7°–42.4° and 50.4°–54.0° after PAO (p < 0.0001, p = 0.0347), respectively; in particular, the ACEA after PAO did not significantly differ from that in the normal hips (p = 0.1917). The ACEA was not correlated with hip flexion, or the rim-neck distance (p = 0.9601, 0.8764). The LCEA was also not correlated with hip abduction (p = 0.1683). Conclusion: Patients after PAO showed no significant difference in maximum hip flexion while squatting compared to before PAO and normal hips. Horizontalized weight-bearing acetabulum with normalized ACEA could be adequate correction of the acetabular fragment to restore hip RoM without coxalgia that induce the inability to perform squats after PAO..
4. Kyohei Shiomoto, Satoshi Hamai, Goro Motomura, Satoshi Ikemura, Masanori Fujii, Yasuharu Nakashima, Influencing Factors for Joint Perception After Total Hip Arthroplasty
Asian Cohort Study, Journal of Arthroplasty, 10.1016/j.arth.2019.12.039, 35, 5, 1307-1314, 2020.05, Background: Perceiving replaced joints as natural is one of the best scenario after total hip arthroplasty (THA). We investigated the distribution of and influencing factors for patient's joint perception after THA in Asian cohort, which is not well known. Methods: We mailed a questionnaire to Asian patients who had undergone THA in our institution between 2012 and 2016, and this study included 318 Asian patients. The questionnaire assessed patient's joint perception, Oxford Hip Score (OHS), Short Form-12 Health Survey (SF-12) physical, mental, and role component summaries, and satisfaction score. Leg length discrepancy and global femoral offset before and after THA were measured using radiographs. The patients were divided into 2 groups with patient's joint perception: natural and artificial perception groups. OHS, SF-12, satisfaction, leg length discrepancy, and global femoral offset were compared between natural and artificial perception groups, and which factors significantly influenced joint perception were determined. Results: Of the 318 patients, 165 patients (51.8%) perceived their replaced joint as a natural joint. OHS, SF-12 physical and role component summaries, and satisfaction score in natural perception group were significantly higher than those in artificial perception group, without significant difference in SF-12 mental component summary. Multivariate analysis showed that less of usual pain, easier to get in or out of a car, and osteoarthritis in the contralateral hip were positively associated with natural joint perception after THA. Conclusion: This study indicated to surgeons that pain relief and improvement in getting in or out of a car after THA could lead to even better patient's joint perception..
5. Kyohei Shiomoto, Satoshi Hamai, Daisuke Hara, Hidehiko Higaki, Hirotaka Gondo, Yifeng Wang, Satoru Ikebe, Kensei Yoshimoto, Keisuke Komiyama, Satoru Harada, Yasuharu Nakashima, In vivo kinematics, component alignment and hardware variables influence on the liner-to-neck clearance during chair-rising after total hip arthroplasty, Journal of Orthopaedic Science, 10.1016/j.jos.2019.05.012, 25, 3, 452-459, 2020.05, Background: There is an interest in quantifying dynamic hip kinematics before and after total hip arthroplasty (THA) during chair-rising: one of daily life activities. Methods: The study consisted of 21 patients who underwent unilateral total hip arthroplasty for symptomatic osteoarthritis. We obtained continuous radiographs using a flat-panel X-ray detector while the participants rose from chair. We assessed the pre and postoperative hip joint's movements using three-dimensional-to-two-dimensional model-to-image registration techniques. We also measured minimum liner-to-neck distances at maximum hip flexion and extension as anterior and posterior liner-to-neck distances, respectively. Multivariate analyses were applied to determine which factors were associated with liner-to-neck distances. Results: The cup inclination, cup anteversion, and stem anteversion averaged 37.4°, 23.1°, and 30.1°, respectively. Significantly larger maximum hip flexion angle (72°) was found during chair-rising after THA compared to that before THA (63°, P < 0.01). The anterior pelvic tilt at the maximum hip flexion after THA (3° of anterior tilt) was significantly (P < 0.05) anterior compared to that before THA (1° of posterior tilt). The anterior and posterior liner-to-neck distances averaged 12.3 mm and 8.1 mm, respectively, with a significant difference (P < 0.01). No liner-to-neck contact was found in any hips. In multivariate analysis, the hip flexion angle, cup inclination, stem anteversion and head diameter were significantly associated with the anterior liner-to-neck distance (P < 0.05), the hip extension angle, cup anteversion, neck length and with or without elevated rim were significantly associated with the posterior liner-to-neck distance (P < 0.05, 0.01, 0.05, 0.01, respectively). Conclusion: This study indicates that well-positioned THA provide increased range of hip flexion with sufficient anterior liner-to-neck clearance during chair-rising. Dynamic hip kinematics, component position, and hardware variables significantly influenced on the liner-to-neck clearance under weight-bearing conditions..
6. Masato Kiyohara, Satoshi Hamai, Hirotaka Gondo, Hidehiko Higaki, Satoru Ikebe, Tetsuro Ushio, Koji Murakami, Yasuharu Nakashima, Tibiofemoral kinematics in healthy and osteoarthritic knees during twisting, Journal of Orthopaedics, 10.1016/j.jor.2020.03.051, 21, 213-217, 2020.09, Purpose: The purpose of this study was to determine the in vivo kinematics of healthy knees and those with osteoarthritis (OA), during twisting using density-based image-matching techniques. Methods: Five healthy subjects and 26 patients with medial knee OA performed twisting under periodic X-ray imaging. Results: The tibiofemoral rotation at the ipsilateral/contralateral twist in healthy and OA knees were 11° ± 9.3° externally/9.5° ± 5.6° internally (p < 0.05) and 4.4° ± 7.2° externally/2.7° ± 8° internally (p < 0.05), respectively. Conclusions: The kinematic analysis of OA knees during twisting revealed significantly smaller tibiofemoral rotation than those of healthy knees..
7. Kenta Momii, Satoshi Hamai, Goro Motomura, Kensuke Kubota, Masato Kiyohara, Takuaki Yamamoto, Yasuharu Nakashima, Revascularization of the necrotic femoral head after traumatic open anterior hip dislocation in a child
A case report, Journal of Medical Case Reports, 10.1186/s13256-019-2192-7, 13, 1, 2019.08, Introduction: Avascular necrosis of the femoral capital epiphysis is the most serious complication after traumatic dislocation of the hip in children. This case report discusses the localization and revascularization of the necrotic femoral head following rarely experienced traumatic open anterior hip dislocation in children. Case presentation: Our patient was an 11-year-old Japanese boy who had open anterior hip dislocation sustained in a traffic accident. Reduction of the hip joint was performed in an emergency operation, and he was evaluated using serial gadolinium-enhanced magnetic resonance imaging. T1-weighted magnetic resonance images showed two bands with low signal intensity in the femoral capital epiphysis on coronal and oblique axial planes, indicating the existence of avascular osteonecrosis of the femoral head. We observed gadolinium enhancement in the central region of the epiphysis, where the area between the two bands with low signal intensity was located. Serial assessment with enhanced magnetic resonance images during a non-weight-bearing period of 1.5 years after injury showed revascularization starting from the central region and converging toward the peripheral region. Although the patient had leg-length discrepancy due to the early epiphyseal closure, non-weight-bearing treatment for the avascular osteonecrosis of the femoral head achieved a favorable outcome without any hip joint dysfunction, pain, or sign of secondary osteoarthritic change within 4.5 years after injury. Conclusion: We confirmed the revascularization process of the necrotic lesion in the femoral capital epiphysis in an 11-year-old boy using serial gadolinium-enhanced magnetic resonance imaging. Conservative non-weight-bearing treatment achieved a favorable outcome..
8. Satoshi Hamai, Yusuke Kohno, Daisuke Hara, Kyohei Shiomoto, Mio Akiyama, Jun-Ichi Fukushi, goro motomura, Satoshi Ikemura, Masanori Fujii, Yasuharu Nakashima, Minimum 10-year clinical outcomes after periacetabular osteotomy for advanced osteoarthritis due to hip dysplasia, Orthopedics, 10.3928/01477447-20180806-04, 41, 5, 300-305, 2018.09, The purpose of this study was to examine the minimum 10-year clinical outcomes, including patient-reported and functional outcomes, of periacetabular osteotomy in patients with advanced osteoarthritis. A total of 46 hips in 44 patients with advanced osteoarthritis who underwent periacetabular osteotomy between 1992 and 2006 were retrospectively reviewed. Mean age at surgery was 47.5 years, and mean follow-up was 16.9±4.7 years. Survivorship was determined using the Kaplan-Meier method, and the associated risk factors for the endpoint-conversion to total hip arthroplasty less than 15 years after surgery-were evaluated. The Oxford Hip Score and the University of California, Los Angeles activity score were evaluated at final follow-up. The survival rates at 15 and 20 years after surgery were 80% and 59%, respectively. Multivariate analysis indicated that body mass index greater than 24 kg/m2 (P=.034; odds ratio, 1.72) was significantly associated with the endpoint as an independent risk factor. For 32 hips of 31 patients with preserved native joints at final follow-up, the Oxford Hip Score and the University of California, Los Angeles score averaged 41±5 and 5.2±1.8, respectively, equivalent (P=.28 and P=.215, respectively) to the scores of 14 hips of 13 patients with conversion to total hip arthroplasty (38±8.7 and 5.8±1.4, respectively). The results of this mid-term study may be useful for surgical decision-making among patients with advanced osteoarthritis who want to preserve native hip joints..
9. Keisuke Komiyama, Satoshi Hamai, Daisuke Hara, Satoru Ikebe, Hidehiko Higaki, Kensei Yoshimoto, Kyohei Shiomoto, Hirotaka Gondo, Yifeng Wang, Yasuharu Nakashima, Dynamic hip kinematics during squatting before and after total hip arthroplasty, Journal of Orthopaedic Surgery and Research, 10.1186/s13018-018-0873-3, 13, 1, 2018.07, [URL].
10. naoya kozono, Takamitsu Okada, Naohide Takeuchi, Satoshi Hamai, Hidehiko Higaki, Takeshi Shimoto, Satoru Ikebe, Hirotaka Gondo, Yoshitaka Nakanishi, Takahiro Senju, Yasuharu Nakashima, In vivo dynamic acromiohumeral distance in shoulders with rotator cuff tears, Clinical Biomechanics, 10.1016/j.clinbiomech.2018.07.017, 60, 95-99, 2018.12.
11. Yu Matsushita, Satoshi Hamai, Ken Okazaki, Koji Murakami, Yuan Ma, Masato Kiyohara, Hideki Mizuuchi, Yukio Akasaki, Yasuharu Nakashima, Recreational sports, workout and gym activities after total knee arthroplasty
Asian cohort study, Journal of Orthopaedics, 10.1016/j.jor.2018.12.002, 16, 1, 41-44, 2019.01.
12. Daisuke Hara, Satoshi Hamai, Keisuke Komiyama, goro motomura, Kyohei Shiomoto, Yasuharu Nakashima, Sports Participation in Patients After Total Hip Arthroplasty vs Periacetabular Osteotomy
A Propensity Score-Matched Asian Cohort Study, Journal of Arthroplasty, 10.1016/j.arth.2017.08.035, 33, 2, 423-430, 2018.02.
13. Keisuke Komiyama, Satoshi Hamai, Daisuke Hara, Satoru Ikebe, Yifeng Wang, Hirotaka Gondo, Hidehiko Higaki, Yasuharu Nakashima, Dynamic hip kinematics during recreational classical ballet and hula dance after total hip arthroplasty
Two case reports, Journal of Medical Case Reports, 10.1186/s13256-018-1942-2, 13, 1, 2019.01, [URL].
14. Koji Murakami, Satoshi Hamai, Ken Okazaki, Hirotaka Gondo, Yifeng Wang, Satoru Ikebe, Hidehiko Higaki, Takeshi Shimoto, Hideki Mizuuchi, Yukio Akasaki, Yasuharu Nakashima, Knee kinematics in bi-cruciate stabilized total knee arthroplasty during squatting and stair-climbing activities, Journal of Orthopaedics, 10.1016/j.jor.2018.05.003, 15, 2, 650-654, 2018.06.
15. K. Murakami, Satoshi Hamai, T. Moro-oka, K. Okazaki, H. Higaki, T. Shimoto, S. Ikebe, Yasuharu Nakashima, Variable tibiofemoral articular contact stress in fixed-bearing total knee arthroplasties, Orthopaedics and Traumatology: Surgery and Research, 10.1016/j.otsr.2017.11.015, 104, 2, 177-183, 2018.04.
16. Koji Murakami, Satoshi Hamai, Ken Okazaki, Satoru Ikebe, Hidehiko Higaki, Takeshi Shimoto, Yasuharu Nakashima, Preoperative tibial mechanical axis orientation and articular surface design influence on the coronal joint line orientation relative to the ground during gait after total knee arthroplasties, Knee Surgery, Sports Traumatology, Arthroscopy, 10.1007/s00167-018-4899-1, 1-9, 2018.03.
17. Koji Murakami, Satoshi Hamai, Ken Okazaki, Yifeng Wang, Satoru Ikebe, Hidehiko Higaki, Takeshi Shimoto, Hideki Mizuuchi, Yukio Akasaki, Yasuharu Nakashima, In vivo kinematics of gait in posterior-stabilized and bicruciate-stabilized total knee arthroplasties using image-matching techniques, International Orthopaedics, 10.1007/s00264-018-3921-z, 1-9, 2018.04.
18. Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondo, Satoru Ikebe, Yasuharu Nakashima, Pre- and post-operative evaluation of pincer-type femoroacetabular impingement during squat using image-matching techniques
A case report, International Journal of Surgery Case Reports, 10.1016/j.ijscr.2017.12.007, 42, 121-127, 2018.01, [URL].
19. Kanji Osaki, Satoshi Hamai, Ken Okazaki, Yasutaka Tashiro, Yukihide Iwamoto, Preoperative 3-D MRI planning of tunnel placement in ACL reconstruction for a skeletally immature patient
A case report, Journal of Orthopaedic Science, 10.1016/j.jos.2017.05.011, 2018.01.
20. Daisuke Abe, Satoshi Hamai, Ken Okazaki, Masato Yoshimoto, Takashi Komatsu, Yasuharu Nakashima, Inverted V-shaped high tibial osteotomy for severe tibia vara associated with Turner syndrome
A case report and review of literature, International Journal of Surgery Case Reports, 10.1016/j.ijscr.2017.12.008, 42, 128-132, 2018.01, [URL].
21. Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondoh, Yasuharu Nakashima, Visualization of a cam-type femoroacetabular impingement while squatting using image-matching techniques
a case report, Skeletal Radiology, 10.1007/s00256-017-2677-7, 46, 9, 1277-1282, 2017.09.
22. Hara D, Satoshi Hamai, Jun-ichi Fukushi, Ken-ichi Kawaguchi, Motomura Goro, Ikemura S, Komiyama K, Yasuharu Nakashima, Does participation in sports activities after periacetabular osteotomy degenerate the stage of osteoarthritis?, Am J Sports Med, 2017.06.
23. Utsunomiya T, Motomura Goro, Ikemura S, Satoshi Hamai, Jun-ichi Fukushi, Yasuharu Nakashima, The Results of Total Hip Arthroplasty After Sugioka Transtrochanteric Anterior Rotational Osteotomy for Osteonecrosis., J Arthroplasty, 2017.04.
24. Murakami K, Satoshi Hamai, Ken Okazaki, Satoru Ikebe, Nakahara H, Hidehiko Higaki, Takeshi Shimoto, Hideki Mizu-uchi, Kuwashima U, Yukihide Iwamoto, Kinematic analysis of stair climbing in rotating platform cruciate-retaining and posterior-stabilized mobile-bearing total knee arthroplasties., Arch Orthop Trauma Surg, 137, 5, 701-711, 2017.05.
25. Satoshi Hamai, Ken Okazaki, Satoru Ikebe, Murakami K, Hidehiko Higaki, Nakahara H, Takeshi Shimoto, Hideki Mizu-uchi, Yukio Akasaki, Yukihide Iwamoto, In vivo kinematics of healthy and osteoarthritic knees during stepping using density-based image-matching., J Appl Biomech, 32, 6, 586-592, 2016.01.
26. Yasuharu Nakashima, Masanori Fujii, Noguchi Y, Duenaga K, Takuaki Yamamoto, Jun-ichi Fukushi, Motomura Goro, Satoshi Hamai, Hara D, Yukihide Iwamoto, Arthroscopic validation of radiographic minimum joint space width associated with the subchondral bone exposure in symptomatic hip dysplasia., Mod Rheumatol, 27, 3, 524-528, 2016.03.
27. Kozono N, Takamitsu Okada, Naohide Takeuchi, Satoshi Hamai, Hidehiko Higaki, Satoru Ikebe, Takeshi Shimoto, Miake G, Nakanishi Y, Yukihide Iwamoto, In vivo kinematic analysis of glenohumeral joint during dynamic full axial rotation and scapular plane full abduction in healthy shoulders by 3D-to-2D model-to-image registration techniques., Knee Surg Sports Traumatol Arthrosc, 2016.08.
28. Yasuharu Nakashima, Takuaki Yamamoto, Jun-ichi Fukushi, Motomura Goro, Satoshi Hamai, Yusuke Kohno, Yukihide Iwamoto, Transtrochanteric rotational osteotomy for avascular necrosis of the femoral head after unstable slipped capital femoral epiphysis: 10-year clinical results., J Orthop Sci, 21, 6, 831-835, 2016.06.
29. Masanori Fujii, Yasuharu Nakashima, Noguchi Y, Takuaki Yamamoto, Motomura Goro, Satoshi Hamai, Yukihide Iwamoto, Factors associated with severity of intra-articular lesions in patients with severe hip dysplasia., Arthroscopy , 32, 8, 1581-1589, 2016.08.
30. Kuwashima U, Tashiro Y, Ken Okazaki, Hideki Mizu-uchi, Satoshi Hamai, Murakami K, Yukihide Iwamoto, Comparison of the impact of closing wedge versus opening wedge high tibial osteotomy on proximal tibial deformity and subsequent revision to total knee arthroplasty., Knee Surg Sports Traumatol Arthrosc, 25, 3, 869-875, 2016.03.
31. Hara D, Yasuharu Nakashima, Satoshi Hamai, Hidehiko Higaki, Satoru Ikebe, Takeshi Shimoto, Yoshimoto K, Yukihide Iwamoto, Three-Dimensional Hip Joint Kinematics during Golf swing after Total Hip Arthroplasty., Am J Sports Med, 44, 7, 1801-1809, 2016.07.
32. Kuwashima U, Satoshi Hamai, Ken Okazaki, Satoru Ikebe, Hidehiko Higaki, Hideki Mizu-uchi, Yukio Akasaki, Murakami K, Yukihide Iwamoto, Contact stress analysis of the anterior tibial post in bi-cruciate stabilized and mobile-bearing posterior stabilized total knee arthroplasty designs., J Mech Behav Biomed Mater, 60, 460-467, 2016.01.
33. Satoshi Hamai, Yasuharu Nakashima, Mashima N, Takuaki Yamamoto, Kamada T, Motomura Goro, Imai H, Jun-ichi Fukushi, Miura H, Yukihide Iwamoto, Comparison of 10-year Follow-up Wear between Annealed and Remelted Highly Cross-Linked Polyethylenes: A Propensity-Matched Cohort Study., J Mech Behav Biomed Mater, 59, 99-107, 2016.01.
34. Murakami K, Satoshi Hamai, Ken Okazaki, Satoru Ikebe, Takeshi Shimoto, Hara D, Hideki Mizu-uchi, Hidehiko Higaki, Yukihide Iwamoto, In vivo kinematics of healthy male knees during squat and golf swing using image-matching techniques., Knee, 23, 2, 221-226, 2016.02.
35. Hara D, Yasuharu Nakashima, Satoshi Hamai, Hidehiko Higaki, Satoru Ikebe, Takeshi Shimoto, Yoshimoto K, Yukihide Iwamoto, Dynamic Hip Kinematics in Patients with Osteoarthritis during Weight-Bearing Activities., Clin Biomech (Bristol, Avon), 32, 150-156, 2016.01.
36. Kanazawa M, Satoshi Hamai, Yasuharu Nakashima, Ohishi M, Motomura Goro, Takuaki Yamamoto, Jun-ichi Fukushi, Ushijim T, Hara D, Yukihide Iwamoto, Pelvic tilt and movement during total hip arthroplasty in the lateral decubitus position., Mod Rheumatol , 26, 3, 425-440, 2016.03.
37. Kanazawa M, Yasuharu Nakashima, Satoshi Hamai, Hirata M, Iwamoto Y, Is a Stem Version on the Crosstable Lateral Radiograph Accurate in Total Hip Arthroplasty?, J Arthroplasty, 36, 6, 1356-1360, 2016.06.
38. Yoshimoto K, Yasuharu Nakashima, Takuaki Yamamoto, Jun-ichi Fukushi, Motomura Goro, Ohishi M, Satoshi Hamai, Yukihide Iwamoto, Dislocation and its recurrence after revision total hip arthroplasty., Int Orthop, 40, 8, 1625-1630, 2016.08.
39. Ohishi M, Yasuharu Nakashima, Takuaki Yamamoto, Motomura Goro, Jun-ichi Fukushi, Satoshi Hamai, Yusuke Kohono, Yukihide Iwamoto, Cementless total hip arthroplasty for patients previously treated with femoral osteotomy for hip dysplasia: the incidence of periprosthetic fracture., Int Orthop, 40, 8, 1601-1606, 2016.08.
40. Matsubara H, Ken Okazaki, Osaki K, Tashiro Y, Hideki Mizu-uchi, Satoshi Hamai, Yukihide Iwamoto, Optimal entry position on the lateral femoral surface for outside-in drilling technique to restore the anatomical footprint of anterior cruciate ligament., Knee Surg Sports Traumatol Arthrosc, 24, 9, 2758-2766, 2016.06.
41. Okamoto S, Hideki Mizu-uchi, Ken Okazaki, Satoshi Hamai, Tashiro Y, Nakahara H, Iwamoto Y, Two-dimensional planning can result in internal rotation of the femoral component in total knee arthroplasty., Knee Surg Sports Traumatol Arthrosc, 24, 1, 229-235, 2016.01.
42. Ustunomiya T, Takuaki Yamamoto, Motomura Goro, Satoshi Hamai, Yukihide Iwamoto, The clinicopathologic findings of a subchondral insufficiency fracture of the femoral head in a male patient: a case report., Skeletal Radiol, 45, 10, 1425-1429, 2016.10.
43. Lee Y, Motomura Goro, Takuaki Yamamoto, Yasuharu Nakashima, Ohishi M, Satoshi Hamai, Iura K, Yukihide Iwamoto, Rapidly destructive arthrosis of the hip joint in a young adult with systemic lupus erythematosus., Rheumatol Int, 35, 10, 1753-1757, 2015.10.
44. Kuwashima U, Ken Okazaki, Tashiro Y, Hideki Mizu-uchi, Satoshi Hamai, Okamoto S, Murakami K, Yukihide Iwamoto, Correction of coronal alignment correlates with reconstruction of joint height in unicompartmental knee arthroplasty., Bone Joint Res, 4, 8, 128-133, 2015.08.
45. Okamoto S, Hideki Mizu-uchi, Ken Okazaki, Satoshi Hamai, Nakahara H, Iwamoto Y, Effect of tibial posterior slope on knee kinematics, quadriceps force, and patellofemoral contact force after posterior-stabilized total knee arthroplasty., J Arthroplasty, 30, 8, 1439-1443, 2015.08.
46. Nakahara H, Ken Okazaki, Satoshi Hamai, Okamoto S, Kuwashima U, Hidehiko Higaki, Yukihide Iwamoto, Does knee stability in the coronal plane in extension affect function and outcome after total knee arthroplasty?, Knee Surg Sports Traumatol, 23, 6, 1693-1698, 2015.06.
47. Satoshi Hamai, KEN OKAZAKI, Shimoto T, Nakahara H, Higaki H, Yukihide Iwamoto, Continuous sagittal radiologic evaluation of stair-climbing in cruciate-retaining and posterior-stabilized total knee arthroplasties., J Arthroplasty, 30, 5, 864-869, 2015.05.
48. Satoshi Hamai, Miyahara H, Esaki Y, Hirata G, Terada K, Kobara N, Miyazaki K, Senju T, Yukihide Iwamoto, Mid-term clinical results of primary total knee arthroplasty using metal block augmentation and stem extension in patients with rheumatoid arthritis., BMC Musculoskelet Disord, 16, 1, 225, 2015.01.
49. Nakahara H, Ken Okazaki, Satoshi Hamai, Kawahara S, Hidehiko Higaki, Hideki Mizu-uchi, Yukihide Iwamoto, Rotational alignment of the tibial component affects the kinematic rotation of a weight-bearing knee after total knee arthroplasty., Knee, 22, 3, 201-205, 2015.03.
50. Nakahara H, Ken Okazaki, Hideki Mizu-uchi, Satoshi Hamai, Yasutaka Tashiro, Shuichi Matsuda, Yukihide Iwamoto, Correlations between patient satisfaction and ability to perform daily activities after total knee arthroplasty: why aren't patients satisfied?, J Orthop Sci, 20, 1, 87-92, 2015.01.
51. Yamashita T, Wakata Y, Satoshi Hamai, Yasuharu Nakashima, Yukihide Iwamoto, Flanagan B, Nakashima N, Hirokawa S, Presumption model for postoperative hospital days from operation records., International Journal of Computer & Information Science, 16, 50-59, 2015.01.
52. Ken Okazaki, Yukihisa Takayama, Kanji Osaki, Yoshio Matsuo, Hideki Mizu-uchi, Satoshi Hamai, Hiroshi Honda, Yukihide Iwamoto, Subclinical cartilage degeneration in young athletes with posterior cruciate ligament injuries detected with T1ρ magnetic resonance imaging mapping., Knee Surg Sports Traumatol Arthrosc, 23, 10, 3094-3100, 2015.10.
53. Sonoda K, Yamamoto Takuaki, Motomura Goro, Satoshi Hamai, Karasuyama K, Kubo Y, Iwamoto Y, Bilateral corticosteroid-induced osteonecrosis of the femoral head detected at a 6-week interval., SpringerPlus, 4, 662, 2015.04.
54. Satoshi Hamai, Yasuharu Nakashima, Mio Akiyama, Umito Kuwashima, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Yukihide Iwamoto, Ischio-pubic stress fracture after periacetabular osteotomy in patients with hip dysplasia , Int Orthop, 2014.05.
55. Motomura Goro, Takuaki Yamamoto, K. Abe, Yasuharu Nakashima, Masanobu Ohishi, Satoshi Hamai, Toshio Doi, Hiroshi Honda, Yukihide Iwamoto, Scintigraphic assessments of the reparative process in osteonecrosis of the femoral head using SPECT/CT with 99mTc hydroxymethylene diphosphonate., Nucl Med Commun, 35, 10, 1047-1051, 2014.10.
56. Daisuke Hara, Yasuharu Nakashima, Satoshi Hamai, Hidehiko Higaki, Satoru Ikebe, Takeshi Shimoto, Makoto Hirata, Masayuki Kanazawa, Yusuke Kohno, Yukihide Iwamoto, Kinematic analysis of healthy hips during weight-bearing activities by 3D-to-2D model-to-image registration technique., Biomed Res Int, 457573, 2014.11.
57. Yusuke Kohno, Yasuharu Nakashima, Toshio Kitano, Tomoyuki Nakamura, Kazuyuki Takamura, Miho Akiyama, Daisuke Hara, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Satoshi Hamai, Yukihide Iwamoto, Subclinical bilateral involvement of the hip in patients with slipped capital femoral epiphysis-a multicentre study., Int Orthop, 37, 8, 477-482, 2014.03.
58. KEN OKAZAKI, Yasutaka Tashiro, Hideki Mizu-uchi, Satoshi Hamai, Yukihide Iwamoto, Influence of the posterior tibial slope on the flexion gap in total knee arthroplasty, Knee, 21, 4, 806-809, 2014.08.
59. KEN OKAZAKI, Hirokazu Matsubara, Kanji Osaki, Yasutaka Tashiro, Hideki Mizu-uchi, Satoshi Hamai, Toshio Doi, Yukihide Iwamoto, Femoral tunnel apertures on the lateral cortex in anterior cruciate ligament reconstruction: an analysis of cortical button fixation., Arthroscopy, 30, 7, 841-848, 2014.07.
60. Hiroyuki Nakahara, KEN OKAZAKI, Satoshi Hamai, Shigetoshi Okamoto, Umito Kuwashima, Hidehiko Higaki, Yukihide Iwamoto, Does knee stability in the coronal plane in extension affect function and outcome after total knee arthroplasty?, Knee Surg Sports Traumatol Arthrosc, 2014.06.
61. Shigetoshi Okamoto, KEN OKAZAKI, Hiroaki Mitsuyasu, Shuichi Matsuda, Hideki Mizu-uchi, Satoshi Hamai, Yasutaka Tashiro, Yukihide Iwamoto, Extension gap needs more than 1-mm laxity after implantation to avoid post-operative flexion contracture in total knee arthroplasty, Knee Surg Sports Traumatol Arthrosc, 2014.01.
62. Iida K, Satoshi Hamai, Takuaki Yamamoto, Yasuharu Nakashima, Motomura Goro, Ohishi M, Karasuyama K, Iwamoto Y, Subchondral fracture of the femoral head after acetabular fracture: a case report, J Med Case Rep, 81, 1, 447, 2014.01, [URL].
63. Yusuke Khono, Yasuharu Nakashima, T Kitano, T Nakamura, K Takamura, Mio Akiyama, Daisuke Hara, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Satoshi Hamai, Yukihide Iwamoto, Subclinical bilateral involvement of the hip in patients with slipped capital femoral epiphysis-a multicentre study., Int Orthop, 2013.12.
64. Yasuharu Nakashima, Masanobu Hirata, Mio Akiyama, Takahumi Itokawa, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Satoshi Hamai, Yukihide Iwamoto, Combined anteversion technique reduced the dislocation in cementless total hip arthroplasty., Int Orthop, 2013.09.
65. Mio Akiyama, Yasuharu Nakashima, T Kitano, K Takamura, Yusuke Kohno, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Satoshi Hamai, Remodelling of femoral head-neck junction in slipped capital femoral epiphysis: a multicentre study., Int Ortho, 2013.08.
66. Yasuharu Nakashima, Taishi Sato, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Satoshi Hamai, Mio Akiyama, Masanobu Hirata, Daisuke Hara, Yukihide Iwamoto, Results at a minimum of 10 years of follow-up for AMS and PerFix HA-coated cementless total hip arthroplasty: impact of cross-linked polyethylene on implant longevity., J Orthop Sci, 2013.07.
67. Satoshi Hamai, Nicholas J. Dunbar, Taka-aki Moro-oka, Hiromasa Miura, Yukihide Iwamoto, Scott A. Banks, Physiologic sagittal plane patellar kinematics during dynamic deep knee flexion, Int Orthop, Epub ahead of print, 2013.06.
68. Takahumi Itokawa, Yasuharu Nakashima, Takuaki Yamamoto, Motomura Goro, Masanobu Ohishi, Satoshi Hamai, Miho Akiyama, Masanobu Hirata, Daisuke Hara, Yukihide Iwamoto, Late dislocation is associated with recurrence after total hip arthroplasty, Int Orthop, Epub ahead of print, 2013.05.
69. Satoshi Hamai, Hiromasa Miura, KEN OKAZAKI, Takeshi Shimoto, Hidehiko Higaki, Yukihide Iwamoto, No influence of coronal laxity and alignment on lift-off after well-balanced and aligned total knee arthroplasty , Knee Surg Sports Traumatol Arthrosc, Epub ahead of print, 2013.04.
70. Masanobu Hirata, Yasuharu Nakashima, Masanobu Ohishi, Satoshi Hamai, Daisuke Hara, Yukihide Iwamoto, Surgeon Error in Performing Intraoperative Estimation of Stem Anteversion in Cementless Total Hip Arthroplasty, J Arthroplasty, Epub ahead of print, 2013.04.
71. Satoshi Hamai, Taka-aki Moro-oka, Nicholas J. Dunbar, Hiromasa Miura, Yukihide Iwamoto, Scott A. Banks, In vivo healthy knee kinematics during dynamic full flexion, Biomed Res Int, 10.1155/2013/717546, 2013.01, [URL].
72. Kuroyanagi Y, Mu S, Hamai S, Robb WJ, Banks SA, In vivo knee kinematics during stair and deep flexion activities in patients with bicruciate substituting total knee arthroplasty., J Arthroplasty, 2012.01.
73. Shang Mu, Taka-aki Moro-oka, P. Johal, Satoshi Hamai, M. A. R. Freeman, Scott A. Banks, Comparison of static and dynamic knee kinematics during squatting, Clin Biomech (Bristol, Avon), 26, 1, 106-108, 2011.01.
74. Hamai S, Miura H, Matsuda S, Shimoto T, Higaki H, Iwamoto Y, Contact stress at the anterior aspect of the tibial post in posterior-stabilized total knee replacement., J Bone Joint Surg Am, 92, 8, 1765-1773, 2010.08.
75. Satoshi Hamai, Taka-aki Moro-oka, Hiromasa Miura, Takeshi Shimoto, Hidehiko Higaki, B. J. Fregly, Yukihide Iwamoto, Scott A. Banks, Knee kinematics in medial osteoarthritis during in vivo weight-bearing activities., J Orthop Res, 27, 12, 1555-1561, 2009.12.
76. Satoshi Hamai, Three-dimensional knee joint kinematics during golf swing and stationary cycling after total knee arthroplasty., J Orthop Res, 26, 12, 1556-1561, 2008.12.
77. Mawatari T, Miura H, Hamai S, Shuto T, Nakashima Y, Okazaki K, Kinukawa N, Sakai S, Hoffmann P, Iwamoto Y, Keaveny T, Vertebral strength changes in rheumatoid arthritis patients treated with alendronate, as assessed by finite element analysis of clinical computed tomography scans: A prospective randomized clinical trial., Arthritis Rheum, 58, 11, 3340-3349, 2008.11.
78. Hamai S, Miura H, Higaki H, Shimoto T, Nakanishi Y, Iwamoto Y, Kinematic analysis of mobile-bearing total knee arthroplasty using a 6-DOF knee simulator., J Orthop Sci, 13, 6, 543-549, 2008.06.
79. Moro-oka TA, Hamai S, Miura H, Shimoto T, Higaki H, Fregly BJ, Iwamoto Y, Banks SA, Dynamic activity dependence of in vivo normal knee kinematics., J Orthop Res, 26, 4, 428-434, 2008.04.
80. Hamai S, Miura H, Higaki H, Matsuda S, Shimoto T, Sasaki K, Yoshizumi M, Okazaki K, Tsukamoto N, Iwamoto Y, Kinematic analysis of kneeling in cruciate-retaining and posterior-stabilized total knee arthroplasties., J Orthop Res, 26, 4, 435-442, 2008.04.
81. Moro-oka TA, Hamai S, Miura H, Shimoto T, Higaki H, Fregly BJ, Iwamoto Y, Banks SA, Can magnetic resonance imaging-derived bone models be used for accurate motion measurement with single-plane three-dimensional shape registration?, J Orthop Res, 25, 7, 867-872, 2007.07.
82. Hamai, S.; Mawatari, T.; Miura, H., et al., Evaluation of inhomogeneity of human vertebral cancellous bone by using high-resolution computed tomography in vivo. , Calcified Tissue International, 72, 4, 407, 2003.04.
83. Hamai, S; Mawatari, T; Miura, H, et al., Localization of the cancellous bone inside the human lumber vertebra , J Bone Miner Res, 19, S432-S432, Supplement: 1, 2004.10.
84. Hamai S, Harimaya K, Maeda T, Hosokawa A, Shida J, Iwamoto Y, Traumatic Atlanto-occipital Dislocation with Atlantoaxial Subluxation., SPINE, 31, 13, E421-E424, 2006.04.
Presentations
1. Kubo Y, Motomura G, Utsunomiya T, Fujii M, Sonoda K, Ikemura S, Hamai S, Fukushi JI, Nakashima Y., Role Of Acetabular Abnormality On The Localization Of Fracture In Non-traumatic Subchondral Fracture Of The Femoral Head, 2019 Annual Meeting of Orthopaedic Research Society, 2019.02.
2. Kozono N, Okada T, Takeuchi N, Hamai S, Higaki H, Shimoto T, Ikebe S, Gondo H, Nakanishi Y, Senju T, Nakashima Y., In Vivo Dynamic Acromiohumeral Distance: Biomechanical Comparison of Shoulders with Rotator Cuff Tears and Healthy Shoulders, 2019 Annual Meeting of Orthopaedic Research Society, 2019.02.
3. Satoshi Hamai, Kensei Yoshimoto, Jun-ichi Fukushi, Goro Motomura, Satoshi Ikemura, Masanori Fujii, Yasuharu Nakashima, Visualization of cam- and pincer-type femoroacetabular impingement during squat using image-matching techniques: A preliminary evaluation of two cases, The 44th Annual Meeting of the Japanese Orthopaedic Society for Sports Medicine, 2018.09.
4. Murakami K, Satoshi Hamai, Ken Okazaki, Wang Y, Hidehiko Higaki, Hideki Mizu-uchi, Yukio Akasaki, Kuwashima U, Yasuharu Nakashima, Knee Kinematics in Bi-Cruciate Stabilized Total Knee Arthroplasty During Weight-Bearing Activities, 2017 Annual Meeting of the Orthopaedic Research Society, 2017.03.
5. Hara D, Yasuharu Nakashima, Satoshi Hamai, Yoshimoto K, Komiyama K, Shiomoto K, Banks SA, How does transtrochanteric rotational osteotomy change the dynamic three-dimensional intact ratio in hips with osteonecrosis of the femoral head? -a new method and pilot study-, 2017 Annual Meeting of the Orthopaedic Research Society, 2017.03.
6. Satoshi Hamai, Yasuharu Nakashima, Mashima N, Takuaki Yamamoto, Kamada T, Miura H, Yukihide Iwamoto, Comparison of 10-year Follow-up Wear between Annealed and Remelted Highly Cross-Linked Polyethylenes., American Academy of Orthopaedic Surgery, 2016.03.
7. Satoshi Hamai, Yasuharu Nakashima, Hara D, Higaki H, Ikebe S, Shimoto T, Hirata M, Kanazawa M, Kohno Y, Yukihide Iwamoto, Dynamic hip kinematics during golf swing in patients after total hip arthroplasty., 28th Annual Congress of International Society for Technology in Arthroplasty, 2015.09.
8. Satoshi Hamai, Yasuharu Nakashima, Hara D, Higaki H, Ikebe S, Shimoto T, Hirata M, Kanazawa M, Kohno Y, Yukihide Iwamoto, Dynamic hip kinematics during golf swing in patients after total hip arthroplasty., 2nd Pan Pacific Orthopaedic Congress, 2015.07.
9. Satoshi Hamai, KEN OKAZAKI, Shimoto T, Nakahara H, Mizu-uchi H, Higaki H, Yukihide Iwamoto, Continuous sagittal radiological evaluation of stair-climbing in cruciate-retaining and posterior-stabilized total knee arthroplasties using image-matching techniques., 2nd Pan Pacific Orthopaedic Congress, 2015.07.
10. Satoshi Hamai, KEN OKAZAKI, Mizu-uchi H, Shimoto T, Nakahara H, Higaki H, Yukihide Iwamoto, Kinematic Analysis Of Stair-climbing In Cruciate-retaining And Posterior-stabilized Total Knee Arthroplasties., The 61th Annual Meeting of the Orthopaedic Research Society, 2015.03.
11. Satoshi Hamai, KEN OKAZAKI, Mizu-uchi H, Shimoto T, Higaki H, Yukihide Iwamoto, Kinematic Analysis of Stair-Climbing in Cruciate-Retaining and Posterior-Stabilized Total Knee Arthroplasties., The 27th Annual Congress of the International Society for Technology in Arthroplasty, 2014.12.
12. Satoshi Hamai, KEN OKAZAKI, Hideki Mizu-uchi, Yasutaka Tashiro, Takeshi Shimoto, Hidehiko Higaki, Yukihide Iwamoto, Kinematic analysis of kneeling and stair-climbing in a posterior-stabilized total knee arthroplasty, Computer Assisted Radiology and Surgery 28th International Congress and Exhibition , 2014.06.
13. Takanori Yamashita, Yoshifumi Wakata, Naoki Nakashima, Sachio Hirokawa, Satoshi Hamai, Yasuharu Nakashima, Yukihide Iwamoto, Extraction of Determinants of Postoperative Length of Stay from Operation Records, 2014 International Conference on Information Technology and Biomedical Engineering, 2014.05.
14. Daisuke Hara, Yasuharu Nakashima, Satoshi Hamai, Hidehiko Higaki, Takeshi Shimoto, Satoru Ikebe, Mio Akiyama, Masanobu Hirata, Masayuki Kanazawa, Yusuke Khono, Yukihide Iwamoto, In Vivo Kinematic Analysis of the Hip during Activities of Daily Living, The 60th Annual Meeting of the Orthopaedic Research Society, 2014.03.
15. Masanobu Hirata, Yasuharu Nakashima, Masanobu Ohishi, Satoshi Hamai, Mio Akiyama, Daisuke Hara, Masayuki Kanazawa, Yusuke Kohno, Yukihide Iwamoto, Optimal Anterior Femoral Offset To Maximize The Range Of Motion In Total Hip Arthroplasty, The 60th Annual Meeting of the Orthopaedic Research Society, 2014.03.
16. Hideki Mizu-uchi, KEN OKAZAKI, Kazutaka Nishikawa, Shuichi Matsuda, Satoshi Hamai, Yasutaka Tashiro, Shingo Fukagawa, Shigetoshi Okamoto, Yukihide Iwamoto, Postoperative Tibial Alignment Was Improved By Using Anterior Border Of The Tibia As Reference In Total Knee Arthroplasty, The 60th Annual Meeting of the Orthopaedic Research Society, 2014.03.
17. Shigetoshi Okamoto, Hideki Mizu-uchi, KEN OKAZAKI, Satoshi Hamai, Tashiro Yasutaka, Hiroyuki Nakahara, Umito Kuwashima, Yukihide Iwamoto, Accuracy of Preoperative Planning with Three-dimensional Bone Model in Total Knee Arthroplasty: Two-dimensional Computed Tomography Slices can Induce Internal-rotated Position of The Femoral Component, The 60th Annual Meeting of the Orthopaedic Research Society, 2014.03.
18. Shigetoshi Okamoto, Hideki Mizu-uchi, KEN OKAZAKI, Satoshi Hamai, Yasutaka Tashiro, Hiroyuki Nakahara, Umito Kuwashima, Yukihide Iwamoto, Comparison Of Preoperative Measurement In Total Knee Arthroplasty Between Using 3d Bone Model And 2d Images, Ameircan Academy of Orthopaedic Surgery, 2014.03.
19. Takeshi Shimioto, Satoru Ikebe, Hidehiko Higaki, Kazuho Nishimatsu, Yoshitaka Shiraishi, Hiromasa Miura, Satoshi Hamai, Yukihide Iwamoto, Evaluation of in vivo impingement between components in cruciate-retaining and posterior-substituting total knee arthroplasty, The 15th International Conference on Biomedical Engineering, 2013.12.
20. Satoshi Hamai, KEN OKAZAKI, Takeshi Shimoto, Hidehiko Higaki, Riku Sakimura, Hideki Mizu-uchi, Tashiro Yasutaka, Yukihide Iwamoto, Post-cam mechanism functions during kneeling but does not function during stair-climbing in a posterior-stabilized total knee replacement , The 8th Combined Meeting of the Orthopaedic Research Society, 2013.10.
21. Satoshi Hamai, KEN OKAZAKI, Takeshi Shimoto, Hidehiko Higaki, Riku Sakimura, Hideki Mizu-uchi, Tashiro Yasutaka, Yukihide Iwamoto, Post-cam mechanism and impingement of the anterior tibial post during stair-climbing in posterior-stabilized total knee arthroplasty, The 59th Annual Meeting of the Orthopaedic Research Society, 2013.01.
22. Nicholas J. Dunbar, Satoshi Hamai, Scott A. Banks, A Simple Program for Quantifying Sagittal Plane Patellar Kinematics, The 55th Annual Meeting of the Orthopaedic Research Society, 2009.02.
23. Shang Mu, Satoshi Hamai, Scott A. Banks, Comparison of static and Dynamic Knee Kinematics during Squatting, The 55th Annual Meeting of the Orthopaedic Research Society, 2009.02.
24. Satoshi Hamai, Taka-aki Moro-oka, Hiromasa Miura, Takeshi Shimoto, Hidehiko Higaki, B. J. Fregly, Yukihide Iwamoto, Scott A. Banks, Knee kinematics in medial osteoarthritis during in vivo weight-bearing activity, The 6th Combined Meeting of Orthopaedic Research Societies, 2007.10.
25. Satoshi Hamai, Hiromasa Miura, Hidehiko Higaki, Takeshi Shimoto, Shuichi Matsuda, KEN OKAZAKI, Yukihide Iwamoto, Evaluation of anterior tibial post impingement during gait in posterior-stabilized total knee arthroplasty, The 6th Combined Meeting of Orthopaedic Research Societies, 2007.10.
26. Satoshi Hamai, Hiromasa Miura, Hidehiko Higaki, Shuichi Matsuda, Takeshi Shimoto, KEN OKAZAKI, Tashiro Yasutaka, Yukihide Iwamoto, Correlation between the varus-valgus balance and lift-off during stair climb activity after total knee arthroplasty, The 53rd Annual Meeting of the Orthopaedic Research Society, 2007.02.
27. Taka-aki Moro-oka, Satoshi Hamai, Hiromasa Miura, Takeshi Shimoto, Hidehiko Higaki, B. J. Fregly, Scott A. Banks, Yukihide Iwamoto, Dynamic activity dependence of normal knee kinematics in vivo, The 53rd Annual Meeting of the Orthopaedic Research Society, 2007.02.
28. Satoshi Hamai, Hiromasa Miura, Shuichi Matsuda, KEN OKAZAKI, Hidehiko Higaki, Takeshi Shimoto, Yukihide Iwamoto, Kinematic analysis of kneeling in total knee arthroplasty, 4th Congress of Asia-Pacific Knee Society, 2006.09.
29. Hidehiko Higaki, Takeshi Shimoto, M. Yoshizumi, Y. Nakanishi, Kousaku Kurata, Satoshi Hamai, Hiromasa Miura, Yukihide Iwamoto, Motion analysis of kneeling in cruciate-retaining and posterior-substituting total knee arthroplasty, 5th World Congress of Biomechanics, 2006.07.
30. Satoshi Hamai, Hiromasa Miura, Shuichi Matsuda, KEN OKAZAKI, Kousuke Sasaki, Nobuaki Tsukamoto, Takeshi Shimoto, Hidehiko Higaki, Yukihide Iwamoto, Kinematic analysis of kneeling in cruciate retaining and posterior stabilized total knee arthroplasties, The 52nd Annual Meeting of the Orthopaedic Research Society, 2006.03.
31. Taka-aki Moro-oka, Satoshi Hamai, Hiromasa Miura, Hidehiko Higaki, B. J. Fregly, Yukihide Iwamoto, Scott A. Banks, Can MR Derived Bone Models Be Used for Accurate Motion Measurement with 3D Shape Registration?, The 52nd Annual Meeting of the Orthopaedic Research Society, 2006.03.
32. Hideki Mizu-uchi, Shuichi Matsuda, Hiromasa Miura, Hidehiko Higaki, Kousaku Kurata, T. Fukunaga, KEN OKAZAKI, Satoshi Hamai, Yukihide Iwamoto, Three-dimensional analysis of CT-based navigation system for total knee arthroplasty, The 52nd Annual Meeting of the Orthopaedic Research Society, 2006.03.
33. Satoshi Hamai, Taro Mawatari, Hiromasa Miura, Toshihide Shuto, Yasuharu Nakashima, Hisakata Yamada, KEN OKAZAKI, Tsutomu Kawano, Nobuaki Tsukamoto, Hidehiko Higaki, Yukihide Iwamoto, Localization of the Cancellous Bone inside the Human Lumber Vertebra, The 26th Annual Meeting of American Society for Bone and Mineral Research, 2005.10.
34. Satoshi Hamai, Hiromasa Miura, Shuichi Matsuda, KEN OKAZAKI, Nobuaki Tsukamoto, Takeshi Shimoto, Hidehiko Higaki, Yukihide Iwamoto, Kinematic Analysis of Mobile Bearing Total Knee Prostheses using the Knee Joint Simulator, The 18th Annual Symposium of the International Society for Technology in Arthroplasty, 2005.09.
35. Taro Mawatari, Hiromasa Miura, Satoshi Hamai, Toshihide Shuto, Yasuharu Nakashima, Hisakata Yamada, KEN OKAZAKI, L. Smith, Yukihide Iwamoto, Effect of Alendronate and Vitamin K2 on 3-D Microarchitecture of Osteoporotic Spine in Rheumatoid Arthritis Patients in vivo, The 51st Annual Meeting of the Orthopaedic Research Society, 2005.05.
36. Taro Mawatari, Hiromasa Miura, Satoshi Hamai, Toshihide Shuto, Yasuharu Nakashima, Hisakata Yamada, KEN OKAZAKI, L. Smith, Yukihide Iwamoto, Evaluation of Efficacy of Alendronate on 3-D Microarchitecture of Glucocorticoid-induced Human Osteoporotic Spine in vivo by using High-Resolution Computed Tomography, The 5th Combined Meeting of the Orthopaedic Research Societies, 2004.10.
37. Satoshi Hamai, Taro Mawatari, Hiromasa Miura, Toshihide Shuto, Yasuharu Nakashima, Hisakata Yamada, KEN OKAZAKI, Tsutomu Kawano, Nobuaki Tsukamoto, Hidehiko Higaki, Yukihide Iwamoto, Evaluation of inhomogeneity of human vertebral cancellous bone by using high-resolution computed tomography in vivo, 30th European Symposium on Calcified Tissues, 2003.05.
Membership in Academic Society
  • Japanese Orthopaedic Association
  • West-Japanese Society of Orthopaedics & Traumatology
  • Japanese Society for Replacement Arthroplasty
  • Japanese Society for Clinical Biomechanics
  • Japan Hip Society
  • Japanese Society for Joint Diseases
  • The Japanese Orthopaedic Society for Sports Medicine
  • The Japanese Association of Rehabilitation Medicine
  • International Society for Technology in Arthroplasty
  • International Congress for Joint Reconstruction
Awards
  • Blue Ribbon Article Award (ORTHOPEDICS)
  • 7th JOSSM-USA Traveling Fellow
  • Outstanding Contribution in Reviewing Award (The Knee)
  • The 41st Congress of the Japanese Society for Joint Diseases, Honorable Award
  • Encouraging Prize of Japan Orthopaedics and Traumatology Foundation, Inc. No.263
  • 26th Academic Encouragement Award of Department of Orthopaedic Surgery, Kyushu University
  • Postdoctoral Fellowship Award from Uehara Memorial Foundation