Takeshi Shoji

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In this study, postoperative results of intertrochanteric curved varus osteotomy (CVO) for idiopathic osteonecrosis of the femoral head (ION) were studied retrospectively and optimal indication of CVO was considered. Between 1995 and 2011, CVO was performed in 51 patients (53 hips) for the treatment of ION in our department. The patients who had the(More)
We report a case of mucoid degeneration of the posterior cruciate ligament (PCL). A 37-year-old male had suffered from right knee pain for several years. The active range of motion of his right knee was −30° extension and 100° flexion, with terminal pain. Magnetic resonance imaging (MRI) showed low proton density and T2WI with fat saturation-high signals in(More)
The purpose of this study was to evaluate whether the bone morphology of the hip affects the range of motion (ROM) in total hip arthroplasty (THA). Using the CT data of 63 patients who underwent THA, we calculated the ROM of flexion (Flex), internal rotation (Int-R) and external rotation (Ext-R) using 3D dynamic analysis software. We measured the distance(More)
To evaluate the influence of stem offset and neck shaft angles on the range of motion before component impingement (ROMCI) and bony impingement (ROMBI), and the types of impingement in total hip arthroplasty (THA). Using the computed tomography data of 101 patients who underwent THA, three-dimensional dynamic motion analysis was performed using a modular(More)
The purpose of this study was to examine retrospectively the effectiveness of Sugioka’s transtrochanteric valgus osteotomy (TVO) combined with the shelf procedure for patients who had advanced osteoarthritis (OA) of the hip with severe acetabular dysplasia. Sixty-two hips in 61 patients were reviewed retrospectively between April 1993 and March 2009. Of(More)
The purpose of this study was to evaluate whether femoral antetorsion affects the range of motion (ROM) following total hip arthroplasty (THA) using 3D dynamic analysis. Using 3D computed tomography (CT) data of 71 patients (71 hips) who underwent THA, we calculated antetorsion of the femoral neck, flexion range of motion (Flex ROM), internal rotation(More)
INTRODUCTION Reports of dislocation after bipolar hemiarthroplasty (BHA) abound in literature, and several studies have mentioned the factors that are associated with an increased risk of dislocation. However, there is no report detailing the pattern of impingement in BHA and how femoral antetorsion can affect the range of motion (ROM) after BHA. PURPOSE(More)
BACKGROUND It is known from clinical and experimental studies that the healing potential of the anterior cruciate ligament (ACL) is extremely poor and that early phases of ligament healing require an augmented blood supply. MicroRNA (miRNA) is a type of small, noncoding RNA that negatively regulates gene expression, and miRNA (miR)-210 is reported to be(More)
BACKGROUND Hip dysplasia is a common cause of secondary osteoarthritis (OA). Periacetabular osteotomy or rotational acetabular osteotomy has been used as joint-preserving procedures. However, only a few reports of long-term results with these operations have been reported. QUESTIONS/PURPOSES (1) Would satisfactory clinical and radiographic outcomes be(More)
PURPOSE The purpose of this study was to clarify the criteria for femoroacetabular impingement (FAI) by way of a systematic review of FAI-related articles, as well as to define more appropriate inclusion or exclusion criteria in the diagnosis of FAI. METHODS A systematic review of FAI-related articles was performed using Web of Science. Thirty-two(More)