Bone Mineral Density Measurements Around Osseointegrated Implants: A Precision Study and Validation of Scan Protocol for Transfemoral Amputees
| Autor: | Bente L. Langdahl, Maiken Stilling, Kjeld Søballe, Klaus Kjær Petersen, Peter Holmberg Jørgensen, Rehne Lessmann Hansen |
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| Rok vydání: | 2016 |
| Předmět: |
musculoskeletal diseases
Adult Male Bone density Endocrinology Diabetes and Metabolism Coefficient of variation Dentistry Periprosthetic 030209 endocrinology & metabolism Osseointegration Amputation Surgical Patient Positioning 03 medical and health sciences 0302 clinical medicine Absorptiometry Photon Clinical Protocols Bone Density Journal Article Cadaver Medicine Humans Radiology Nuclear Medicine and imaging Orthopedics and Sports Medicine Femur Aged Bone mineral Aged 80 and over 030222 orthopedics Bone-Anchored Prosthesis business.industry Middle Aged musculoskeletal system Female Implant business Nuclear medicine Cadaveric spasm |
| Zdroj: | Hansen, R L, Langdahl, B L, Jørgensen, P H, Petersen, K K, Søballe, K & Stilling, M 2018, ' Bone Mineral Density Measurements Around Osseointegrated Implants : A Precision Study and Validation of Scan Protocol for Transfemoral Amputees ', Journal of Clinical Densitometry, vol. 21, no. 2, pp. 244-251 . https://doi.org/10.1016/j.jocd.2017.03.002 |
| ISSN: | 1094-6950 |
| Popis: | Visual evaluation of bone changes around an osseointegration (OI) implant in femoral amputees examined on plain radiographs shows that periprosthetic bone resorption takes place during the first years after OI surgery, but the bone mineral density (BMD) change has not been previously quantified by dual-energy X-ray absorptiometry (DXA). Precision is vital when monitoring BMD changes around implants, and thus the aim of this study was to evaluate the precision and feasibility of a scan protocol for BMD measurements in proximity of OI implants. The proximal part of 2 human cadaveric femoral bones (specimens A and B) with OI implants were mounted in a positioning jig and DXA scans were repeated 5 times in increments of 5° from neutral (0°) to 20° flexion and rotation. BMD changes as a result of change in leg position were evaluated. Repeated patient examinations (n = 20) were conducted in a clinical setting and the precision error was calculated for each of 7 periprosthetic custom-made regions of interest (ROIs). The precision of cadaveric BMD measurements in neutral position was |
| Databáze: | OpenAIRE |
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