Femoral bone adaptation to stable long-term cemented total hip arthroplasty in dogs

被引:21
作者
Bergh, MS
Muir, P
Markel, MD
Manley, PA
机构
[1] Univ Wisconsin, Sch Vet Med, Dept Surg Sci, Comparat Orthopaed Res Lab, Madison, WI 53706 USA
[2] Univ Wisconsin, Sch Vet Med, Dept Med Sci, Madison, WI 53706 USA
关键词
D O I
10.1111/j.1532-950X.2004.04032.x
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 [兽医学];
摘要
Objective-To quantify long-term bone adaptation after stable cemented total hip arthroplasty (cTHA) in dogs. Study Design-Clinical study. Animals-Fourteen dogs. Methods-Femoral specimens were collected from client-owned dogs that were donated after death because of causes unrelated to their cTHA. Mean ( +/- SEM) dog age was 11.4 +/- 0.7 years and implant duration was 5.3 +/- 0.7 years. Implant stability was established from radiographic signs and gross mechanical stability. Femurs were evaluated at 3 levels based on implant length: proximal stem (PS), mid-stem (MS), and distal to stem (DS). Cortical area, medullary area, and porosity were measured at each level. Implanted femurs were compared to contralateral nonimplanted femurs. Results-Cortical area and cortical porosity were significantly increased in implanted femurs compared to nonimplanted femurs. Cortical area was increased at the MS and DS levels, and porosity was increased at the PS and MS levels in implanted femurs. Porosity was greatest in the endosteal region at the PS and MS levels in implanted femurs. Conclusions-Significant differences in femoral geometry and cortical porosity were detected after long-term stable cTHA. Net bone loss proximally and increased bone mass distally support stress shielding as a important mechanical factor associated with bone adaptation. Distribution of porosity shifts to endosteal regions after long-term cTHA. Clinical Relevance-Significant site-specific femoral adaptation occurs in response to stable cTHA and may precede implant loosening. (C) Copyright 2004 by The American College of Veterinary Surgeons.
引用
收藏
页码:214 / 220
页数:7
相关论文
共 22 条
[1]
Bergh MS, 2001, VET SURG, V30, P510
[2]
VASCULAR AND MORPHOLOGIC CHANGES IN CANINE FEMORA AFTER UNCEMENTED HIP-ARTHROPLASTY [J].
BOUVY, BM ;
MANLEY, PA .
VETERINARY SURGERY, 1993, 22 (01) :18-26
[3]
BURKE D, 1985, ADV CONCEPTS TOTAL H, P21
[4]
THE EFFECT OF THE MEDIAL COLLAR IN TOTAL HIP-ARTHROPLASTY WITH POROUS-COATED COMPONENTS INSERTED WITHOUT CEMENT - AN IN-VIVO CANINE STUDY [J].
CHENG, SL ;
DAVEY, JR ;
INMAN, RD ;
BINNINGTON, AG ;
SMITH, TJ .
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME, 1995, 77A (01) :118-123
[5]
Edwards MR, 1997, J AM VET MED ASSOC, V211, P580
[6]
ENGH CA, 1992, CLIN ORTHOP RELAT R, P13
[7]
GLANT TT, 1993, J BONE MINER RES, V8, P1071
[8]
FEMORAL COMPONENT LOOSENING USING CONTEMPORARY TECHNIQUES OF FEMORAL CEMENT FIXATION [J].
HARRIS, WH ;
MCCARTHY, JC ;
ONEILL, DA .
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME, 1982, 64 (07) :1063-1067
[9]
HUISKES R, 1990, CLIN ORTHOP RELAT R, P27
[10]
THE INFLUENCE OF PROSTHETIC STEM STIFFNESS AND OF A CALCAR COLLAR ON STRESSES IN THE PROXIMAL END OF THE FEMUR WITH A CEMENTED FEMORAL COMPONENT [J].
LEWIS, JL ;
ASKEW, MJ ;
WIXSON, RL ;
KRAMER, GM ;
TARR, RR .
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME, 1984, 66A (02) :280-286