A5059157053- Orthopedic Surgery and Rehabilitation
- Shoulder Injury and Treatment
- Elbow and Forearm Trauma Treatment
- Total Knee Arthroplasty Outcomes
- Orthopaedic implants and arthroplasty
- Bone fractures and treatments
- Lower Extremity Biomechanics and Pathologies
- Shoulder and Clavicle Injuries
- Foot and Ankle Surgery
- Knee injuries and reconstruction techniques
- Orthopedic Infections and Treatments
- Spinal Fractures and Fixation Techniques
- Diabetic Foot Ulcer Assessment and Management
- Spine and Intervertebral Disc Pathology
- Nerve Injury and Rehabilitation
- Hip disorders and treatments
- Medical Imaging and Analysis
- Tendon Structure and Treatment
- Congenital limb and hand anomalies
- Advanced X-ray and CT Imaging
- Musculoskeletal synovial abnormalities and treatments
- Cervical and Thoracic Myelopathy
- Sports injuries and prevention
- Peripheral Nerve Disorders
- Trauma Management and Diagnosis
Osaka University
2011-2022
Osaka Yukioka Medical University
2013
Berurando General Hospital
2011-2013
Nobuhara Hospital
2002
Background: Three-dimensional anatomical correction is desirable for the treatment of a long-bone deformity upper extremity. We developed an original system, including three-dimensional computer simulation program and custom-made surgical device designed on basis simulation, to achieve accurate results. In this study, we investigated clinical application system using corrective osteotomy malunited fractures Methods: Twenty-two patients with extremity (four cubitus varus deformity, ten...
Kinematics of the upper cervical spine during head rotation were investigated using three-dimensional magnetic resonance imaging (MRI) in healthy volunteers.To demonstrate vivo intervertebral coupled motions spine.Although various and vitro studies have identified normal movement patterns spine, no previous accurately analyzed rotation.Fifteen volunteers underwent MRI a 1.0-T imager progressive 15 degrees steps rotation. Segmented MRIs each vertebra neutral position superimposed over images...
In Brief Study Design. Kinematics of the cervical spine during lateral bending were investigated using a novel system three-dimensional motion analysis. Objectives. To demonstrate in vivo intervertebral coupled motions neck. Summary Background Data. No previous studies have successfully documented bending. Methods. Twelve healthy volunteers underwent magnetic resonance imaging (MRI) 7 positions with 10° increments Relative calculated automatically by superimposing segmented...
Update On October 17, 2017, this article was updated from its original format to make use of newer inline video display technology. In the online version article, videos can now be accessed where they are cited in text, thereby enhancing user experience. The text has been altered slightly change phrase "see Appendix" an in-text reference each video. Background: Corrective osteotomy for malunited diaphyseal forearm fractures remains a challenging procedure. We developed computer-assisted...
Abstract Background We developed an original computer program that simulates upper limb reconstruction surgery using three‐dimensional (3D) bone models constructed from computed tomography (CT) data. However, the accuracy of a model has not been clarified, and radiation exposure CT scanning posed concern. The purpose this study was to investigate appropriate parameters required reduce while maintaining 3D forearm bones. Methods Twelve dry bones were used created two different parameters....
Many researchers have evaluated the motions of shoulder girdle, especially scapular and humeral motion. However, few reports exist that describe acromioclavicular joint. The purpose present study was to analyze 3D kinematics joint during arm abduction using MR images obtained by a vertically open MRI. Fourteen shoulders seven volunteers were examined in static positions from 0 degrees maximum seated position. surface models clavicle scapula created, movements each position calculated...
This study represents a new attempt to non-invasively analyze three-dimensional motions of the wrist in vivo. A volume-based registration method using magnetic resonance imaging (MRI) was developed avoid radiation exposure. The primary aim evaluate accuracy and compare it with surface-based registration. secondary contributions scaphoid lunate global motion during flexion-extension (FEM), radio-ulnar deviation (RUD) radial-extension/ulnoflexion, "dart-throwing" (DTM) right wrists 12 healthy...
It is difficult to determine the kinematics of subtalar joint because its anatomical and functional complexity. The purpose study was clarify 3D in vivo.Subjects were four healthy female volunteers. Magnetic resonance imaging (MRI) sequences acquired seven positions during dorsi-plantarflexion (DPF) 10 inversion-eversion (IE) at intervals degrees. MRI data talus calcaneus neutral position superimposed on images other using voxel-based registration, relative motions axes rotation visualized...
Abstract Background Opening wedge corrective osteotomy usually requires a bone graft. However, it is difficult to shape the graft into an appropriate configuration. To resolve this problem, we developed original computer program system that calculates size and of cuts hydroxyapatite block desired shape. Methods Five patients with forearm deformity were included in study. The amount three‐dimensional (3D) be inserted site calculated designed by comparing bilateral 3D models. For graft, was...
To estimate the accuracy of radiographic deformity evaluation for distal radius malunion, we compared results obtained from measurements (palmar tilt, radial angle, and ulnar variance) with those three-dimensional (3D) method using computer bone models in 20 dorsally tilted malunions. Dorsal tilt deformity, shortening were calculated unaffected side as a reference. The 3D showed slightly lower value dorsal than evaluation, but difference was < 10° all cases. In patients ≥ 40°, notable...
We investigated the three-dimensional morphological differences of articular surface femoral trochlea in patients with recurrent dislocation patella and a normal control group using computer models. There were 12 (12 knees) ten subjects (ten knees). Three-dimensional models femur, including cartilage, created. Evaluation was performed on shape surface, focused its convexity, proximal mediolateral distribution cartilage trochlea. The extent any expressed as height, shown by angles about...
We used three-dimensional movement analysis by computer modelling of knee flexion from 0 degrees to 50 in 14 knees 12 patients with recurrent patellar dislocation and 15 ten normal control subjects compare the vivo patella. Flexion, tilt spin patella were described terms rotation angles . The location tibial tubercle evaluated using parameters expressed as percentage shift shift. Patellar inclination femur was also measured patellofemoral contact qualitatively quantitatively analysed. had...