Correlation of periprosthetic bone mineral density and skeletal bone mineral density values in patients with total hip arthroplasty

Background. The presence of periprosthetic osteoporosis influences the postoperative evolution of hip replacement patients, delays the functional rehabilitation process and considerably decreases the quality of life of these patients. Aims. The aim of the study is to demonstrate the role of periprosthetic bone mineral density (BMD) and to correlate its values with skeletal (BMD) values. Methods. The study was carried out at the Clinical Rehabilitation Hospital Cluj-Napoca in the period June-December 2009, on 58 patients aged between 30-83 years with uni- and bilateral cemented and uncemented total hip endoprostheses. For the determination of the bone mineral density, the dual X-ray absorptiometry (DXA) method was used, with the software for orthopedic prostheses available. Results. Statistical data analysis demonstrated a direct correlation between periprosthetic (BMD) and skeletal bone mineral density values, without 100% overlapping, which requires the presence of reference values for periprosthetic areas. Conclusions. Although it follows the tendency of skeletal (BMD), periprosthetic bone mineral density requires T scores specific for the periprosthetic Gruen zones.

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Keywords: bone mineral density, periprosthetic osteoporosis, hip endoprosthesis

ISSN: 15821943

EISSN: 22477322

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