TY  - JOUR
T1  - A Biomechanical Comparison of Epiphyseal Versus Metaphyseal Fixed Bone-Conserving Hip Arthroplasty
AU  - Olsen, Michael
AU  - Sellan, Michael
AU  - Zdero, Rad
AU  - Waddell, James P.
AU  - Schemitsch, Emil H.
Y1  - 2011/05/04
N1  - 10.2106/JBJS.J.01709
JO  - The Journal of Bone & Joint Surgery
SP  - 122
EP  - 127
VL  - 93
IS  - Supplement_2
N2  - Background: 
  The Birmingham Mid-Head Resection (BMHR) is a bone-conserving, short-stem alternative to hip resurfacing for patients with abnormal femoral head anatomy.Methods: 
  The current study examines whether a bone-preserving femoral component that is fixed into the femoral neck metaphysis provides a mechanical advantage in terms of resisting femoral neck fracture in comparison with a conventional hip resurfacing implant in a human cadaveric femoral model.Results: 
  Femora with a BMHR femoral component failed at an average of 23% less load than those prepared with a conventional hip resurfacing component (mean and standard deviation, 5434 ± 2297 compared with 7012 ± 2619 N; p < 0.001).Conclusions: 
  An uncemented, metaphyseal fixed, bone-conserving femoral implant does not provide superior mechanical strength or increased resistance to femoral neck fracture in comparison with a conventional hip resurfacing arthroplasty.
SN  - 0021-9355
M3  - doi: 10.2106/JBJS.J.01709
UR  - http://dx.doi.org/10.2106/JBJS.J.01709
ER  -