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Osteodensitometry measurements of periprosthetic bone using dual energy X-ray absorptiometry following total knee arthroplasty.

Abstract：

INTRODUCTION:The present study investigates the reaction of bone density as well as the possible factors influencing this reaction following a cement-free total knee arthroplasty (TKA). MATERIALS AND METHODS:Osteodensitometry scan data from 50 prospective patients with TKA was evaluated. The patients were split into two groups according to the number of follow-up investigations undertaken. No patient included in the study had received medication to increase bone density. To identify the changes in periprosthetic bone density, dual energy X-ray absorptiometry (DXA) bone density measurements in defined regions of interest (ROI) were performed over a period of 24 months postoperative. The test parameters included gender, severity of arthrosis, as well as the metric parameters T-score, body mass index, cortical bone marrow index, and the varus alignment for the respective patient. RESULTS:The most significant changes in bone density were recorded within the first 3 months postoperative, in particular, the highest bone density loss was found in the region of the proximal medial tibia. Moreover, significant gender-specific associations regarding changes in bone density were established. CONCLUSION:Finally, results achieved in the present study demonstrate that the fundamental classification in defined ROI proved to be functional and effective.

journal_name

Arch Orthop Trauma Surg

journal_title

Archives of orthopaedic and trauma surgery

authors

Windisch C,Windisch B,Kolb W,Kolb K,Grützner P,Roth A

doi

10.1007/s00402-012-1601-9

subject

Has Abstract

pub_date

2012-11-01 00:00:00

pages

1595-601

issue

11

eissn

0936-8051

issn

1434-3916

journal_volume

132

pub_type

杂志文章

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