Sporting activity after hip resurfacing: changes over time.

The evolution of patient sporting activities after hip resurfacing has not yet been studied. A scoring algorithm to quantify sporting activity was developed to compare type of activity, frequency, duration, and overall activity level in the early postoperative period and at mid- to long-term follow-up. Quantification of sporting activity is a challenging undertaking but should become a useful tool to study the relationship between failure rates and the use of prosthesis.