Katsumi Sato

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Proximal humeral fractures occur frequently. Displaced or unstable fractures require open reduction and internal fixation. Our objective was to investigate the clinical and radiographic results of the internal fixation using Polarus humeral nails for fractures of the proximal humerus. From January 2001 to April 2006, 54 shoulders of 54 patients (44 females,(More)
BACKGROUND Post-traumatic contracture is a common complication after elbow trauma. If conservative therapy fails to restore adequate elbow motion, arthrolysis is indicated. The purposes of this study were to evaluate the clinical outcome of open arthrolysis for post-traumatic elbow contracture and to determine factors influencing the outcome. METHODS(More)
Fibroblast growth factor 2 (FGF-2) is a potent mitogen for mesenchymal cells, and a local application of recombinant human FGF-2 (rhFGF-2) in a gelatin hydrogel has been reported to accelerate bone union in our animal studies and preparatory dose-escalation trial on patients with surgical osteotomy. We have performed a randomized, double-blind,(More)
The Fukushima Dai-ichi NPP accident contaminated the soil of densely-populated regions in Fukushima Prefecture with radioactive cesium, which poses significant risks of internal and external exposure to the residents. If we apply the knowledge of post-Chernobyl accident studies, internal exposures in excess of a few mSv/y would be expected to be frequent in(More)
The objective of this study was to work with a consecutive series of patients having Hospital for Special Surgery scores higher than 90 to evaluate kinematic patterns, under in vivo conditions, for 20 Japanese subjects implanted with 2 different mobile-bearing (MB) total knee arthroplasties (TKAs). Femorotibial contact paths for the medial and lateral(More)
A 67-year-old woman with rheumatoid arthritis (RA; Steinblocker stage IV, class 4) who had RA onset at 34 years of age had anterior thigh pain, femoral neuropathy and lower abdominal pain. Physical examination showed multidirectional limit of motion, and radiographic examination showed destruction of the hip joint. MRI and arthrography indicated a cystic(More)
BACKGROUND The choice of surgical or non-surgical treatments for osteochondritis dissecans (OCD) of the humeral capitellum is still controversial. The purpose of this study was to assess the efficacy of fragment fixation for OCD of the humeral capitellum. METHODS We reviewed 28 patients with OCD of the humeral capitellum after a mean follow up of 17(More)
The purposes of this study were to assess the value of motor nerve conduction studies as a prognostic indicator for severe carpal tunnel syndrome (CTS) and to investigate residual nerve disorder after surgery. Fifty hands in 46 patients with severe CTS were followed for at least 6 months after surgery for open carpal tunnel release. Compound muscle action(More)
BACKGROUND Much controversy exists as to the management of full-thickness tears of the rotator cuff. Not all patients with rotator cuff tears require surgical treatment. We have little information whether there are factors that are related to successful outcome of conservative treatment. AIM. The purpose of this study was to determine the factors related to(More)
BACKGROUND Carpal tunnel syndrome (CTS) is one of the most common disease among the entrapment neuropathies. Wrist splinting has been conventionally used for the CTS treatment. The purposes of this study were to assess the efficacy of wrist splinting for CTS, and to evaluate the value of the motor nerve conduction measurement as a prognostic indicator for(More)