Peri-prosthetic bone remodeling and change in bone mineral density in the femur after cemented polished tapered stem implantation
| Autor: | Hiroshi Fujita, Daigo Morita, Naoyuki Katayama, Hiromi Otsuka, Genta Takemoto, Toshiki Iwase |
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| Rok vydání: | 2019 |
| Předmět: |
musculoskeletal diseases
Male Radiodensity Arthroplasty Replacement Hip Peri Dentistry Prosthesis Design Bone remodeling Body Mass Index 03 medical and health sciences 0302 clinical medicine Absorptiometry Photon Japan Bone Density medicine Humans Orthopedics and Sports Medicine Femur 030212 general & internal medicine Postoperative Period Dual-energy X-ray absorptiometry Aged Bone mineral 030222 orthopedics medicine.diagnostic_test business.industry Bone Cements Middle Aged musculoskeletal system Radiography Surgery Lumbar spine Female Bone Remodeling Hip Prosthesis business Total hip arthroplasty Follow-Up Studies |
| Zdroj: | European journal of orthopaedic surgerytraumatology : orthopedie traumatologie. 29(5) |
| ISSN: | 1432-1068 |
| Popis: | We examined longitudinal changes in bone mineral density (BMD) around the femur for 5 years after total hip arthroplasty (THA) using cemented collarless polished double-tapered stem implantation and investigated the influence of BMD changes on radiological remodeling of the femur. Sixty hips from 56 patients who underwent cemented THA with a collarless polished double-tapered stem were included. BMD was measured 2 weeks postoperatively (baseline), 3 months, 6 months, 1 year and annually thereafter until 5 years after surgery using dual-energy X-ray absorptiometry on the lumbar spine and proximal femur of the operated side according to the Gruen’s zone classification. We analyzed predictable factors for BMD preservation in the proximal femur and compared radiological remodeling of the femur and changes in BMD. BMD at 5 years in zone 7 decreased less than 10%, whereas BMD in zone 1 increased to over the baseline (+ 1.9%). Multiple linear regression analyses revealed that body weight was a predictor for positive BMD change in the proximal femur. The frequency of radiolucency of the femur was significantly lower in patients who exhibited an increase in BMD at 5 years compared with BMD at 2 weeks in zone 7. BMD preservation of the proximal femur after cemented collarless polished double-tapered stem implantation was more effective in heavier patients. Furthermore, the frequency of radiolucency around the stem was significantly lower in patients who exceeded 100% of the baseline BMD in zone 7 at 5 years. |
| Databáze: | OpenAIRE |
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