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1.5 cm femoral head bone cysts
6%
222/3599
Acetabular dysplasia
4%
144/3599
Coxa vara
3%
119/3599
Femoral neck bone stock deficiency
146/3599
Age less than 50-years-old
82%
2955/3599
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Absolute contraindications for resurfacing include deficiency of femoral head or neck bone stock or a small or bone-deficient acetabulum. As described by Schmalzried et al., relative contraindications including coxa vara, female sex, large bone cysts greater than 1cm, or major osteophytic changes in the head neck junction. Coxa vara specifically has been associated with early failure of hip resurfacing. Gupta et al. performed 3D finite element analysis to predict long term bone density changes after hip resurfacing. They showed concerning long-term regions of strain at the head-neck junction which may predispose patients to late femoral neck fracture after resurfacing. In a retrospective review, Eastaugh-Waring et al. evaluated what percentage of young adult patients undergoing a total hip arthroplasty would have been canidates for hip resurfacing and found that in approximately 50%, a hip resurfacing may have been indicated.
3.3
(21)
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