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Journal of Long-Term Effects of Medical Implants

Published 4 issues per year

ISSN Print: 1050-6934

ISSN Online: 1940-4379

SJR: 0.184 SNIP: 0.485 CiteScore™:: 1.1 H-Index: 39

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Decreased Tibial Bone Strength in Postmenopausal Women with Aseptic Loosening of Cemented Femoral Implants Measured by Peripheral Quantitative Computed Tomography (pQCT)

Volume 21, Issue 4, 2011, pp. 291-297
DOI: 10.1615/JLongTermEffMedImplants.v21.i4.40
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ABSTRACT

Aseptic loosening after total hip arthroplasty is related to bone loss of the operated leg. The aim of the present study was to investigate the effect of aseptic loosening on volumetric bone mineral density (vBMD) and bone geometry in the operated leg, in postmenopausal women with a loosened cemented femoral implant using peripheral quantitative computed tomography (pQCT). We matched 12 postmenopausal women with aseptic loosening of cemented femoral implant, with 12 women without aseptic loosening (control group) according to age, BMI, and years from operation. All patients underwent pQCT of both tibias, DXA of the lumbar spine, and determination of biochemical markers of bone turnover. pQCT values in the control group as well as the nonoperated legs between groups had no significant difference. In the aseptic loosening group, there was significant reduction of cortical vBMD (cort vBMD) at 14% and 38% sites (cortical site), cortical thickness at 38% site, and of polar stress strength index (SSIp) at 14% site (transition zone) in the operated compared with the nonoperated leg. Similarly, there was significant reduction of cort vBMD at 14% and 38% sites and total vBMD and trabecular vBMD (trab vBMD) at the 14% site in the operated legs between the two groups. The aseptic loosening group had increased osteocalcin and serum collagen cross-linked N- and C-telopeptides (sNTX and sCTX) levels compared with controls. Aseptic loosening is associated with significant decrease of cortical and trabecular vBMD, and impairment of bone geometry and strength only in the operated leg. Increased bone turnover probably represents a local phenomenon, and is not associated with systemic skeletal disease.

CITED BY
  1. Schneider Robert, Imaging of Osteoporosis, Rheumatic Disease Clinics of North America, 39, 3, 2013. Crossref

  2. Shu Rui, Ai Dongqing, Bai Ding, Song Jinlin, Zhao Mengyuan, Han Xianglong, The effects of SOST on implant osseointegration in ovariectomy osteoporotic mice, Archives of Oral Biology, 74, 2017. Crossref

  3. Lee Gun-Woo, Lee Keun-Bae, Does gender influence the outcomes of total ankle arthroplasty in patients with ankle osteoarthritis?, Journal of Orthopaedic Surgery and Research, 15, 1, 2020. Crossref

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