A5007328111- Hip disorders and treatments
- Orthopaedic implants and arthroplasty
- Bone and Joint Diseases
- Total Knee Arthroplasty Outcomes
- Orthopedic Infections and Treatments
- Bone health and treatments
- Hip and Femur Fractures
- Pelvic and Acetabular Injuries
- Cardiac Valve Diseases and Treatments
- Dermatological and COVID-19 studies
- Lower Extremity Biomechanics and Pathologies
- Shoulder and Clavicle Injuries
- Mesenchymal stem cell research
- Orthopedic Surgery and Rehabilitation
- Peroxisome Proliferator-Activated Receptors
- Bone fractures and treatments
- Tendon Structure and Treatment
- Physical Activity and Health
- Infectious Diseases and Tuberculosis
- Foot and Ankle Surgery
- Hematological disorders and diagnostics
- Diabetic Foot Ulcer Assessment and Management
- Parvovirus B19 Infection Studies
- Musculoskeletal synovial abnormalities and treatments
- Mobile Health and mHealth Applications
Kyushu University
2016-2025
Japan Society for the Promotion of Science
2009-2022
Kyushu University Hospital
2022
Orthopedic One
2018
Kyushu Rosai Hospital
1999-2001
Patients with developmental dysplasia of the hip are prone to development degenerative changes in affected hip. The aim this study was evaluate prevalence, morphological features, and clinical relevance acetabular retroversion these patients.We investigated version features acetabulum using pelvic radiographs computed tomography images ninety-six hips fifty-nine patients A diagnosis based on presence a positive cross-over sign radiograph. Using images, we determined anteversion angle at...
The purpose of this article is to verify the hypothesis that osteonecrosis and subchondral insufficiency fracture femoral head can be differentiated on basis their appearance MRI.Between May 1998 February 2009, we reviewed 30 consecutive hips in patients, 60 years old or older at time onset hip pain, with radiologic evidence collapse both MR images histologic results available. Both clinical appearances were investigated. patients divided into two groups according shape low-intensity bands...
In order to clarify how intra-articular lesions influence the survival of a periacetabular osteotomy in patients with dysplasia hip, we performed an observational study 121 (121 hips) who underwent transposition acetabulum combined arthroscopy. Their mean age was 40.2 years (13 64) and follow-up 9.9 (2 18). Labral cartilage degeneration tended originate from anterosuperior part acetabulum, followed by femoral side. all, eight hips (6.6%) had post-operative progression Kellgren-Lawrence grade...
Abstract Objective To investigate the effects of combination treatment with an anticoagulant (warfarin) plus a lipid‐lowering agent (probucol) on prevention steroid‐induced osteonecrosis (ON) in rabbits. Methods Adult male Japanese white rabbits were injected once intramuscularly 20 mg/kg methylprednisolone acetate into right gluteus medius muscle. The then divided 4 groups and treated as follows: one group received warfarin probucol (WP; n = 25), alone (PA; 30), (WA; 26), no...
We investigated the factors related to radiological outcome of a transtrochanteric curved varus osteotomy in patients with osteonecrosis hip. reviewed 73 hips 62 mean follow-up 12.4 years (5 31.1). There were 28 men and 34 women, age 33.3 (15 68) at time surgery. The divided into two groups according their findings: group 1 showed progression collapse and/or joint-space narrowing; 2 had neither progressive nor narrowing. Both these outcomes analysed by stepwise discriminant analysis. A total...
In order to investigate the mechanisms of collapse in osteonecrosis femoral head, we examined which part head was key point a and whether collapsed region associated with size necrotic lesion. Using 30 consecutive surgically removed heads retrospectively analysed whole serial cut sections, specimen photographs, radiographs histological sections. all heads, consistently involved fracture at lateral boundary Histologically, fractures occurred junction between thickened trabeculae reparative...
Abstract The purpose of this study was to examine the effects ceramic femoral head material, size, and implantation periods on wear annealed, cross‐linked ultra‐high molecular weight polyethylene (UHMWPE) (XLPE) in total hip arthroplasty compared non‐cross‐linked conventional UHMWPE (CPE). XLPE fabricated by cross‐linking with 60 kGy irradiation annealing. Femoral heads made from zirconia alumina ceramics cobalt–chrome (CoCr) 22 or 26 mm diameter were used. In retrospective cohort study,...
To estimate the incidence rate of nontraumatic osteonecrosis femoral head (ONFH) in Japanese population.A survey was conducted to ascertain newly identified patients with ONFH Specified Disease Treatment Research Program Fukuoka Prefecture (population 5 million) between 1999 and 2008. Distributions age sex this population were investigated. Crude rates calculated, age-adjusted estimated by adjusting crude values against those for standard each year.In Prefecture, 1,244 recruited into subsidy...
Stress distribution remains unclear in early-stage osteonecrosis of the femoral head (ONFH). To clarify this issue, we generated patient-specific finite element models (FEMs) from 51 patients with ONFH. Patients' hips were classified into three groups: ONFH without a sclerotic boundary (Stage 1, n = 6), 2, 10), and both <2 mm collapse 3, 35). Four used as controls. each FEM was compared magnetic resonance imaging (MRI) computed tomography (CT) results. Fifteen wholly resected heads Stage 3...
Few studies have compared patient-reported outcome measures (PROMs) between primary and revision total hip arthroplasty (THA). We investigated PROMs propensity score-matched THA in an Asian cohort.
Abstract Background Although individual and postural variations in the physiologic pelvic tilt affect acetabular orientation coverage patients with hip dysplasia, their effect on mechanical environment has not been fully understood. Individual-specific, finite-element analyses that account for may provide valuable insight into contact mechanics of dysplastic hips, which can lead to further understanding pathogenesis improved treatment this patient population. Question/purpose We used...
Several animal and human studies suggest pharmacological approaches may prevent steroid-induced osteonecrosis (ON). We asked whether the newly developed 3-hydroxymethyl-3-glutaryl-CoA (HMG-CoA) reductase inhibitor, pitavastatin, could ON in rabbits. injected 65 adult male Japanese white rabbits once with 20 mg/kg of methylprednisolone acetate into right gluteus medius muscle. The were divided two groups; one group 35 received pitavastatins (PS), other 30 no prophylaxis (CTR). Hematological...
Objectives: Total hip arthroplasty (THA) is often performed in the lateral decubitus (lateral) position. In this position, pelvis may have various degrees of tilt leading to implant malposition. We sought quantify pelvic position and further movement during surgery. Methods: 95 cases with primary THA, three-dimensional tilts were quantified by superimposing images reconstructed from CT data onto antero-posterior radiographs taken at set-up after cup placement. Pelvises fixed a device...