Various approaches have been described for metal-on-metal hip resurfacing. We compared the posterolateral and direct lateral
approaches for complications, pain, function, and implant survival in the short and medium term for two surgeons in a consecutive
series of 790 patients (909 hips; July 1997 to July 2004) followed until July 2007. The direct lateral approach group included
135 resurfacing procedures and the posterolateral group included 774 procedures. There was no difference between the two groups
for age or gender. The minimum followup for the anterolateral group was 2 years (mean, 5.1 years; range, 2.0–9.4 years) and
for the posterolateral group 2 years (mean, 5.5 years; range, 2.0–9.6 years). There were no differences between the two approaches
for complications, additional surgery, implant survival, or Oxford hip scores. The 8-year survival rate was 97.9% (95% confidence
interval, 89.9–100) for the direct lateral approach and 97.2% (95% confidence interval, 93.9–99.3) for the posterolateral
approach. This study indicates both approaches offer excellent pain reduction and return to function after Birmingham hip
resurfacing with no difference in survival or in the incidence of complications. An 8-year survival rate of 97% can be achieved
using either the posterolateral approach or the direct lateral approach.
Level of Evidence: Level III, therapeutic study. See the Guidelines for authors for a complete description of levels of evidence.
The institution of the authors has received funding from Smith and Nephew PLC, London, UK.
Each author certifies that his or her institution has approved the human protocol for this investigation and that all investigations
were conducted in conformity with ethical principles of research.