A5081999562- Orthopaedic implants and arthroplasty
- Hip disorders and treatments
- Bone and Joint Diseases
- Orthopedic Infections and Treatments
- Total Knee Arthroplasty Outcomes
- Pelvic and Acetabular Injuries
- Spinal Fractures and Fixation Techniques
- Shoulder and Clavicle Injuries
- Shoulder Injury and Treatment
- Hip and Femur Fractures
- Connective tissue disorders research
- Neurogenetic and Muscular Disorders Research
- Bone fractures and treatments
- Orthopedic Surgery and Rehabilitation
- Cardiac Valve Diseases and Treatments
- Glioma Diagnosis and Treatment
- Bone Metabolism and Diseases
- Elbow and Forearm Trauma Treatment
- Nerve Injury and Rehabilitation
- Cervical and Thoracic Myelopathy
- Cerebral Palsy and Movement Disorders
- Knee injuries and reconstruction techniques
- Case Reports on Hematomas
- Electrical Contact Performance and Analysis
- Neurofibromatosis and Schwannoma Cases
University of the Ryukyus
1991-2024
University of the Ryukyus University Hospital
1986-2022
Osaka University
2012-2013
Okayama University
1983-1989
The effect of the extent osteonecrosis on survival hip resurfacing for femoral head (ONFH) has not been well documented, but is a potentially important variable in decision to perform resurfacing.We examined (1) relationship between volume before surgery and residual necrotic bone after machining, (2) how relative resurfaced (after machining) affected total patients with ONFH, (3) entire (before clinical outcome scores who underwent resurfacing.Thirty-three (39 hips) were reviewed mean...
We reconstructed three-dimensional images of radius and ulna in 38 forearms 25 patients with congenital proximal radioulnar synostosis from their computed tomographic studies. also analysed correlations between the deformities degrees fixed pronation these forearms. The average ulnar deviation, flexion internal rotation were 6°, 3° 18°, respectively. radial extension 3°, 4° 30°, deformity correlated significantly degree pronation. conclude that have remarkable ulna, which might impede...
Objectives This study documents the time elapsed from diagnosis of osteonecrosis femoral head (ONFH) to surgery, exploring factors that influence ONFH severity. Design Retrospective observational a nationwide database. Setting The Kaplan-Meier method with log-rank tests was applied examine period definitive surgery using any as end point. For bilateral cases, date first endpoint. Participants included 2074 cases registered in 34 university hospitals and highly specialised multicentre...
The prognosis of conservative treatment for fragility fracture the pelvis (FFP) in older patients remains poor. Percutaneous pelvic screw placement (PPSP), which aids FFP, can be challenging to perform using fluoroscopy alone because proximity blood vessels and neuroforamina. Hence, this study aimed investigate accuracy clinical outcomes PPSP real-time 3D fluoroscopic navigation FFP hybrid operating room.This included 41 with who underwent a room between April 2016 December 2020....
AbstractThe response of regional-cerebral blood flow (rCBF) to change in the tissue temperature was studied using normal and tumour-bearing monkeys. The local brain selectively heated by external microwave irradiation, while body kept hypothermic (30.1 ± 0.1 °C, mean standard error) immersion a cold water bath. rCBF and/or tumour tissues sequentially measured inhalation hydrogen clearance method. In animal study (n=7), changed temperatures over range 29.4–40.7°C with constant rate 15.2% per...
A very rare case of recurrent anterior dislocation the hip with neurofibromatosis was reported.A man aged forty-one years sustained his right when he fell posteriorly while working in field fifteen ago. The dislocated reduced under general anesthesia. Two ago working, and same hip. Third occurred tried to stand up, forth swimming.Radiographs demonstrated an elogation femur, increase neck-shaft angle, but no remarkable change seen acetabulum femoral head.At operation, we recognized tear...
An analysis is presented of four short-term retrieved highly crosslinked polyethylene (HXLPE) hip liners grafted with 2-methacryloyloxyethyl phosphorylcholine (MPC) on their bearing surfaces, which were recently commercialized as a new generation artificial joints. Straightforward evidences by X-ray photoelectron spectroscopy (XPS) confirmed that the MPC layer peeled off surface all in both main wear and nonwear zones. Analyses Fourier-transform infrared attenuated total reflection assessed...
Abstract Background In total hip arthroplasty (THA) after failed transtrochanteric rotational osteotomy (TRO) for osteonecrosis of the femoral head (ONFH), deformity proximal femur has been reported to affect stem placement. The aims this study were evaluate morphological changes in femur, muscle atrophy, and soft tissue thickening THA TRO clinical outcomes. Methods group included 17 patients (18 hips) who underwent TRO. control 21 (28 primary ONFH. To before THA, we measured anteroposterior...
Patients with developmental dysplasia of the hip (DDH) undergo curved periacetabular osteotomy (CPO) to prevent progressive osteoarthritis. The acetabulum's morphology varies in each DDH type. Therefore, developing a three-dimensional preoperative plan is important CPO. However, optimal rotation angle osteotomized bone remains unclear. This study aimed examine contact pressure (CP) acetabular cartilage type using finite element analysis and surgical simulation.
We evaluated the findings of MRI on painful shoulders in 19 hemiplegic patients. T1-weighted (spin echo) image and T2-weighted (fast spin were scanned with 0.5-Tesla MR system. On MRI, supraspinatus tendon tears detected 18 shoulders, degenerative change all bone bruise 2 inflammation 13 16 shoulders. Eventually most patients suffered wide severe injuries rotator cuff bone. Since many these lesions could not be repaired by surgery, it will important to keep their reduced normal position from...
Abstract The prevalence rate of severely mentally and physically disabled children (SDC) aged 6–15 years in Okinawa prefecture on 1 May 1989 was 0.74/1000 (143/192 038) according to Oshima's classification, compared with 0.89/1000 (170/192 the Ministry Education's classification minor modifications. number region classes 1, 2, 3 4 for SDC were 100, 34, 6 3, respectively. difference ( n = 27) between total numbers two classifications mainly because 21 categorized as ‘walking support’ who...
Curved periacetabular osteotomy (CPO) is indicated for patients with developmental dysplasia of hip (DDH) to prevent progressive osteoarthritis. Patients DDH have not only lateral acetabulum but also anterior and posterior dysplasia. The full circumference acetabular coverage angle (ACA) the femoral head should be evaluated preoperatively. This study aimed determine ACA in before after CPO compared normal patients.Twenty-three (a total 24 hips) undergoing between February 2006 March 2014...
Acid alpha-glucosidase purified from pig liver showed heterogeneity in its affinity to Sephacryl S-200 gel. was separated into two fractions (S1 and S2) by chromatography. Each fraction contained components at apparent 76 kDa 67 on SDS/PAGE. The amount of S1 about 1.3 times that the S2 fraction. In kidney ratio similar liver. However, heart as much spleen acid consisted mainly fraction, containing only a component. Immunohistochemically, demonstrated macrophages spleen. Thus component must...
MR imaging is useful in the diagnosis of occult fractures and bone bruises. at an early stage after injury was performed 17 elderly patients with a clinical suspicion hip fracture who had normal radiograms. Ten positive findings on imaging. In these ten patients, follow-up radiograms were taken three months later, we compared early-stage images radiographic months. Three showed geographic areas low intensity T1 high T2-weighted images, also referred to as bruise, but one them osteosclerotic...
Secure fixation by inserting a half-pin into the iliac crest as pelvic external fixator is important. However, thickness of bone depends on its location and this makes it difficult to insert accurately. The especially narrow in paediatric pelvis, making accurately compared with an adult pelvis. A case described for fracture report, which preoperative planning insertion was performed using three-dimensional CT based intraoperative support device that uses functional plane reference.