Acetabular Retention in Hip Resurfacing Conversion Shows 10-Year Durability

While hip resurfacing arthroplasty was initially utilized to offer improved functional outcomes for younger patients, longitudinal evidence has demonstrated that these implants carry a higher risk of aseptic loosening and revision surgery compared to traditional total hip arthroplasty [1]. Meta-analysis data indicate that resurfacing significantly increases the risk of revision within the first two years, showing a hazard ratio of 12.1 (95% credible interval 2.1 to 120.3) compared to cemented metal-on-polyethylene designs [2]. The reliance on metal-on-metal bearings is associated with adverse reactions to metal debris, which may have a pooled prevalence as high as 9.49% when comprehensive screening is employed [3]. When failure occurs, surgeons face the technical challenge of managing bone stock, sometimes opting for dual-mobility constructs (a design featuring a small femoral head inside a larger polyethylene liner to increase range of motion and stability) to mitigate dislocation risks [4]. The decision to retain a well-fixed acetabular component during conversion aims to preserve pelvic bone, yet the long-term implications for implant survivorship and infection remain a subject of clinical debate. A new study now provides evidence on the durability and complication profile of this retention approach over a 10-year period.