Adults facing moderate-to-severe hip osteoarthritis now have compelling evidence to guide one of orthopedics' most consequential treatment decisions. The choice between surgical replacement and conservative exercise therapy has profound implications for pain relief, mobility, and long-term quality of life in millions of aging adults.
A randomized controlled trial involving 120 participants with confirmed hip osteoarthritis compared total hip arthroplasty against self-directed exercise programs over 12 months. Surgery patients achieved a 27-point greater improvement on the WOMAC osteoarthritis index compared to exercise-only participants, with surgical patients improving by 30.9 points versus just 3.7 points in the conservative group. Harris Hip Scores showed similarly dramatic differences, with surgery patients gaining 29.8 points compared to 5.7 points for exercise alone. Both surgical improvements exceeded established thresholds for clinically meaningful change.
This trial provides rare head-to-head evidence in a field where treatment decisions often rely on observational data or physician preference. The magnitude of surgical benefit—nearly eight-fold greater improvement—suggests that for moderate-to-severe cases, exercise alone may serve primarily as a delaying tactic rather than definitive treatment. However, the single-center design and relatively short follow-up period limit generalizability. Long-term complications, revision rates, and durability of benefits remain unaddressed. The self-directed nature of the exercise program may also underestimate the potential of supervised physical therapy approaches. For longevity-focused adults, this evidence supports earlier surgical intervention when conservative measures prove inadequate, potentially preserving decades of active mobility.