PubMed Journal Database | Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association 
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Showing PubMed Articles 1–25 of 281 from Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association
BACKGROUND: Venous thromboembolism is a serious complication after surgery for malignant musculoskeletal tumors in the lower extremity. However, the incidence of postoperative venous thromboembolism in patients with benign musculoskeletal tumors and musculoskeletal tumors in the upper extremity or trunk remains unclear. Identifying risk factors may provide useful information for selecting patients who should receive chemoprophylaxis. METHODS: A retrospective study of 833 patients with musculoskeletal tumors...
Severe valgus knee deformity caused by chondronecrosis after using a radiofrequency device.
PURPOSE: We investigated the general, sensory, and sympathetic innervation patterns at the undersurface of the extensor carpi radialis brevis (ECRB) origin in patients with recalcitrant tennis elbow. METHODS: Eight elbows in eight consecutive patients (6 females and 2 males) with tennis elbow who underwent arthroscopic surgery were included in this study. The mean age was 45 years (38-66 years), and the mean duration of symptoms before surgery was 23 months (13-52 months). Operative treatment consisted...
BACKGROUND: Giant cell tumors of the distal radius at Campanacci grade III are particularly challenging to treat. We have treated 15 cases of giant cell tumor of the distal radius by en bloc excision and osteoarticular allograft reconstruction with locking compression plate (LCP). The purpose of this study was to assess the intermediate outcomes of all patients treated with this surgery. METHODS: From July 2002 to January 2009, we followed up 15 patients with giant cell tumors of the distal radius who were...
Medium-term results after complex intra-articular fractures of the tibial plateau.
BACKGROUND: To present the medium-term results of intra-articular, bicondylar AO/OTA classification type C fractures of the tibial plateau in a retrospective study at a level-1 trauma center in 22 patients with 23 fractures. METHODS: Demographic data for the patients and details of current clinical and radiological follow-up findings were obtained to assess range of motion, clinical stability and alignment of the knee, and posttraumatic arthrosis (Kellgren/Lawrence score). Functional outcomes were assessed...
Reply to letter to the editor by Nishii.
BACKGROUND: The Ponseti method for treating congenital clubfoot requires Achilles tenotomy to be performed toward the end of serial casting. However, it remains unclear if Achilles tenotomy has a negative effect on clubfoot-associated calf-muscle atrophy. We therefore investigated this issue by ultrasonographic examination. MATERIALS AND METHODS: We studied 36 patients with congenital clubfoot who were treated with the Ponseti method and underwent Achilles tenotomy. Only unilateral cases were evaluated to e...
Tip to apex distance in femoral intertrochanteric fractures: a systematic review.
BACKGROUND: Hip fractures are associated with high morbidity, mortality, and cost. Implants used for hip fracture fixation can fail for many reasons including lag screw cut-out. Tip-apex distance (TAD) is indicative of the position and depth of a screw in the femoral head and has been shown to be associated with cut-out failure. We conducted a systematic review of the published literature to quantify the association between TAD and cut-out failure for patients undergoing hip fracture fixation surgery. METHO...
BACKGROUND: Although human leukocyte antigen (HLA)-B27 gene is the major susceptible gene associated with ankylosing spondylitis (AS), it has been recognized that non-HLA-B27 genes also play key roles in the development of AS. The purpose of this study is to investigate whether a single nucleotide polymorphism (SNP) in the exon region of the programmed cell death 1 (PDCD-1) gene is associated with the susceptibility or the thoracolumbar kyphosis severity of AS in a Chinese Han population. METHODS: A total o...
BACKGROUND: Although intensive studies have been conducted to clarify the incidence, risks, and management methods of deep infection of tumor endoprostheses, limited data have been published in respect of the impact of such deep infection on the function of the corresponding limb. METHODS: Clinical data of 125 patients (infection group 57, control group 68) with malignant bone and soft tissue tumors around the knee enrolled with the Japanese Musculoskeletal Oncology Group were collected. We analyzed the imp...
Rare presentation of a soft-tissue myoepithelial carcinoma.
Long-term follow-up of resection-replantation for sarcoma in the distal radius.
Rotational osteotomy with submuscular plating in skeletally immature patients with cerebral palsy.
BACKGROUND: In cerebral palsy, intoeing gait with increased femoral anteversion is not uncommon and often requires surgical intervention. Although several conventional methods have been used, complications are common. We applied a new technique of rotational osteotomy with submuscular plating in skeletally immature patients with cerebral palsy. METHODS: Eighteen patients (26 femora, 8 bilateral) with a mean age of 8.7 years (range, 6-16) were prospectively treated with this technique. The anatomic distribu...
BACKGROUND: Knee osteoarthritis (OA) is a multifactorial disease and strongly affected by mechanical factors. The aims of the present study were to assess validity and reliability of a new muscle strength measuring device, the Quadriceps Training Machine (QTM) and evaluate the relationship between quadriceps strength measured by QTM and radiographic knee OA by epidemiological survey. METHODS: The isometric knee extension muscle strength of QTM was compared with BIODEX in 24 healthy adults. Then, the relatio...
BACKGROUND: Osteoporosis is a common pathological condition that influences 20 % of women over 50 years of age. This condition decreases bone strength and increases the risk of bone fracture. Naringin is a major flavonoid found in grapefruit and an active compound extracted from a Chinese herbal medicine (Rhizoma Drynariae). Studies have shown that naringin possesses many pharmacological effects. The current study evaluated the influence of naringin on osteoblastic cell differentiation and proliferation,...
BACKGROUND: Patients with long bone metastasis have many therapeutic options, including surgery. However, the appropriate time for surgical intervention and the use of internal fixation prior to impending fracture remains controversial. The purpose of this study was to establish a long bone metastatic model with internal fixation, and to determine whether prophylactic internal fixation for long bone metastasis prior to impending fracture would affect bone destruction, tumor progression, and mortality. MATER...
BACKGROUND: Rotator cuff tear is considered to be a common source of shoulder pain and dysfunction. Osteoarthritis of the glenohumeral joint (OAG) may coexist with rotator cuff tear, especially in elderly patients. The aim of the study was to evaluate the effect of associated OAG on the treatment outcome of rotator cuff repair. METHODS: A total of 85 consecutive shoulders with an arthroscopically repaired isolated full-thickness supraspinatus tendon tear in males were included in this study. The grade of OA...
BACKGROUND: The purpose of this study was to evaluate the surgical results of the single-stage surgery only from posterior approach for the management of thoracic dumbbell tumor and to discuss its usefulness and limitations. METHODS: Sixteen cases of large thoracic dumbbell tumor (11 men and 5 woman, mean age, 44 years) were analyzed retrospectively. Pathologic findings included schwannoma in 10 patients, neurofibroma in 2 patients (Recklinghausen in 1 patient), meningioma in 2 patients, myxolipoma in 1 an...
BACKGROUND: Surgical treatment of adolescent hallux valgus has been a challenging intervention because of high rates of postoperative recurrence. The purposes of this study were to describe a proximal abduction-supination osteotomy of the first metatarsal and prospectively review preliminary results of this procedure for correction of adolescent hallux valgus. METHODS: Eleven patients (12 feet) who had had a proximal abduction-supination osteotomy of the first metatarsal combined with a distal soft-tissue p...
PURPOSE: This study used magnetic resonance imaging (MRI) to evaluate in vivo preoperative changes in the length of the patellar tendon (LPT) in patients undergoing total knee arthroplasty (TKA). We sought to answer two questions: first, does the LPT change with flexion? Second, does the LPT show a gender-specific pattern? METHODS: Eighty-five knees in 76 consecutive osteoarthritic patients were evaluated. The age range was 56-90 years (mean 70). The study included 62 females and 14 males. MRI was performe...
Subtrochanteric femoral fractures: influence of patient age on fracture type and mobility.
BACKGROUND: To investigate the potential influence of patient age on fracture type and postoperative mobility in subtrochanteric femoral fractures. METHODS: Data for patients who had suffered subtrochanteric femoral fractures between 2004 and 2009 were analyzed in a retrospective single-center study at a level I trauma center. Age, sex, accident cause, fracture type (Seinsheimer, Russell-Taylor, and AO classifications) and mobility at different time points (pre-trauma, after 3, 6, and 12 months, and curren...
The 86th Annual Meeting of the Japanese Orthopaedic Association.
A meta-analysis of plate fixation versus intramedullary nailing for humeral shaft fractures.
BACKGROUND: There is a lack of consensus on whether intramedullary nailing (IMN) or plating is superior for humeral shaft fractures. METHODS: In this meta-analysis, we combined data from PubMed, the Excerpta Medica Database (Embase), the Cochrane Library, and the Chinese National Knowledge Infrastructure (CNKI) (all to Dec 31, 2011). Six randomized controlled trials (RCTs) and two quasi-RCTs including 384 participants were selected and assessed by use of an 11-item scale. Heterogeneity was assessed by use o...
