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Your search keyword '"Keiji Tensho"' showing total 3 results
Start Over Author "Keiji Tensho" Journal the journal of arthroplasty
3 results on '"Keiji Tensho"'

1. Standing Versus Supine Radiographs to Evaluate Femoral Head Penetration in the Polyethylene Liner After Total Hip Arthroplasty

Author

Keiji Tensho, Masaaki Maruyama, Shinji Wakabayashi, and Kenji Hisa

Subjects
Adult, Male, Ceramics, medicine.medical_specialty, Supine position, Conventional polyethylene, Arthroplasty, Replacement, Hip, Radiography, Posture, Biocompatible Materials, Young Adult, Femoral head, medicine, Humans, Orthopedics and Sports Medicine, Aged, Aged, 80 and over, business.industry, Polyethylene liner, Femur Head, Penetration (firestop), Middle Aged, Biocompatible material, Prosthesis Failure, Surgery, medicine.anatomical_structure, Polyethylene, Female, Hip Prosthesis, Nuclear medicine, business, Total hip arthroplasty
Abstract

The linear penetration rates for ceramic femoral heads on conventional and highly cross-linked polyethylene were measured and compared with radiographs taken in the standing and supine position taken three weeks postoperatively and at final follow-up. Seventy-five patients (83 hips) with conventional polyethylene (group-1) and two hundred and seventy five patients (300 hips) with highly cross-linked polyethylene (group-2) were studied. Follow-up periods were 14.5years in group-1 and 8.6years in group-2. The average penetration rates in group-1 were 0.17mm/year in supine position and 0.18mm/year in standing position (P

Published
2014

2. Hydroxyapatite Block for Reconstruction of Severe Dysplasia or Acetabular Bone Defects in Total Hip Arthroplasty

Author

Keiji Tensho, Shinji Wakabayashi, Kazuo Terayama, and Masaaki Maruyama

Subjects
medicine.medical_specialty, Osteolysis, business.industry, Developmental dysplasia, Radiography, Dentistry, equipment and supplies, medicine.disease, Severe dysplasia, Osseointegration, Surgery, body regions, Dysplasia, Acetabular bone, medicine, Orthopedics and Sports Medicine, business, Total hip arthroplasty
Abstract

Fourteen hips in 14 patients (all female; average age, 64 years) with severe bone defects due to developmental dysplasia of the hip or migration of the socket were treated with hydroxyapatite block with impacted morselized bone graft in conjunction with a cemented socket. All patients were followed clinically in a prospective fashion, and radiographs were analyzed retrospectively. One initial patient had 17-year follow-up, whereas the remaining 13 patients had follow-up between 4 and 6.5 years. No acetabular components were revised, including the socket of a 17-year postoperative case that remains rigidly fixed and supported by the graft and hydroxyapatite block with only mild polyethylene wear and minor osteolysis. Osteointegration and good clinical outcome were achieved in all cases by reconstruction with this technique in total hip arthroplasty.

Published
2012

3. Hydroxyapatite block for reconstruction of severe dysplasia or acetabular bone defects in total hip arthroplasty: operative technique and clinical outcome

Author

Masaaki, Maruyama, Keiji, Tensho, Shinji, Wakabayashi, and Kazuo, Terayama

Subjects
Reoperation, Bone Transplantation, Arthroplasty, Replacement, Hip, Incidence, Bone Cements, Acetabulum, Osteolysis, Middle Aged, Radiography, Durapatite, Treatment Outcome, Polyethylene, Humans, Female, Hip Joint, Hip Prosthesis, Prospective Studies, Hip Dislocation, Congenital, Aged, Follow-Up Studies, Retrospective Studies
Abstract

Fourteen hips in 14 patients (all female; average age, 64 years) with severe bone defects due to developmental dysplasia of the hip or migration of the socket were treated with hydroxyapatite block with impacted morselized bone graft in conjunction with a cemented socket. All patients were followed clinically in a prospective fashion, and radiographs were analyzed retrospectively. One initial patient had 17-year follow-up, whereas the remaining 13 patients had follow-up between 4 and 6.5 years. No acetabular components were revised, including the socket of a 17-year postoperative case that remains rigidly fixed and supported by the graft and hydroxyapatite block with only mild polyethylene wear and minor osteolysis. Osteointegration and good clinical outcome were achieved in all cases by reconstruction with this technique in total hip arthroplasty.

Published
2010

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