Exercise may produce small improvements in hip osteoarthritis pain and function

The analysis found that exercise compared to no treatment or usual care probably reduces pain by about 7 points on a 0–100 scale (95% CI −10.70 to −3.68; moderate certainty) and improves physical function by about 9 points (95% CI −12.00 to −5.41; moderate certainty). However, the review authors note these improvements are unlikely to reach clinical significance—meaning patients may notice only small practical changes. Exercise showed little to no effect on quality of life or participant-reported treatment success. When exercise was added to another treatment (such as education), it produced minimal additional benefit beyond that co-intervention alone. Adverse events were rare, and the review found no clear evidence that exercise increases harm. The certainty of evidence varied: moderate for the main pain and function comparisons, but low or very low for other outcomes, reflecting the generally small size and methodological limitations of included trials. This suggests exercise has a role in hip osteoarthritis management, but realistic expectations about magnitude of benefit are important.

The review's detailed findings matter for setting expectations. Among the 10 studies comparing exercise to no treatment (494 participants), the pain reduction of 7 points represents roughly a 7–10% improvement on a typical pain scale—statistically significant but often experienced as minor symptom relief rather than transformation. Physical function improved similarly. When researchers looked at the seven studies that added exercise to an existing treatment like education (751 participants), the incremental gain was even smaller: only 3.9 points for pain. The one concerning finding was a very uncertain signal from a small trial (18 participants) comparing exercise to attention control, which suggested increased adverse events, though this came from very limited data. Most included trials were unblinded and small, which can inflate perceived benefits. The review found no difference in study dropout rates between exercise and control groups, suggesting adherence is feasible. Notably, exercise did not significantly improve quality of life scores despite pain reduction, raising questions about whether pain relief alone translates to broader wellbeing in hip osteoarthritis.