Femoral Neck Stress Shielding after Birmingham Mid Head Resection Hip Arthroplasty – Case Report and Literature Review
Issue: 2015 - Volume 5 [Issue 5]
Patrick Weinrauch *
Brisbane Hip Clinic, St. Andrews War Memorial Hospital, Queensland, Australia and School of Medicine, Griffith University, Queensland, Australia and St Andrews War Memorial Hospital, Queensland, Australia
Brisbane Hip Clinic, St. Andrews War Memorial Hospital, Queensland, Australia and St Andrews War Memorial Hospital, Queensland, Australia
*Author to whom correspondence should be addressed.
We describe the presentation of substantial neck thinning due to stress shielding about a well-fixed Birmingham Mid Head Resection femoral implant. Despite significant resorption of proximal peri-articular bone adjacent to the modular femoral head, secondary bone remodeling about the implant stem and proximal femur has occurred and stress shielding has appeared to stabilize, resulting in a satisfactory clinical outcome to date. For total hip arthroplasty utilizing short femoral implants we recommend consideration of alternative design stems to reduce the risk of stress shielding.
Keywords: Hip, mid-head resection, arthroplasty, metal on metal, stress shielding