Clinical and cost-effectiveness of a cycling and education intervention versus usual physiotherapy care for the treatment of hip osteoarthritis in the UK (CLEAT): a pragmatic, randomised, controlled trial.

Hip osteoarthritis causes lasting disability, and physiotherapists need to know whether group-based, lower-cost programmes can match or beat standard one-to-one care. This UK trial compared an 8-week group cycling and education programme (CHAIN) against usual physiotherapy care in 221 adults referred for hip osteoarthritis treatment, measuring changes in a hip function and daily activities score after 10 weeks. Participants in the cycling group showed greater improvement than those receiving usual physiotherapy, a statistically significant result. However, the size of that difference was smaller than the threshold the researchers had set in advance for calling it clinically meaningful, so while the finding is statistically real, it is unclear whether patients would actually notice a meaningful difference.

The economic analysis suggested CHAIN was cost-effective by standard NHS thresholds, and no treatment-related serious adverse events occurred, but longer-term outcomes and generalisability beyond this single-centre trial remain untested.

If you have hip osteoarthritis, you may wonder whether a group exercise class could work as well as individual physiotherapy sessions. This trial, done at one UK hospital, randomly assigned 221 people to either an 8-week group programme combining education and stationary cycling, or to usual one-on-one physiotherapy care, then compared how their hip function and daily activities had changed after 10 weeks. People in the cycling group reported greater improvement in their ability to do daily activities than those getting usual physiotherapy, and this difference was statistically significant, meaning it probably was not due to chance.

However, the difference between the two groups was slightly smaller than the amount researchers had decided beforehand would count as a clinically important improvement, so it's uncertain whether this change would feel meaningful in everyday life. The programme also appeared cost-effective, and no treatment-related serious safety problems were reported.

Because this was a single trial at one centre, it's not yet clear how well these results would apply more broadly or over a longer time.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This trial addresses whether a lower-cost, group-based cycling and education programme can serve as a viable alternative to standard one-to-one physiotherapy for patients with hip osteoarthritis referred through typical NHS pathways. In this single-centre, pragmatic randomised controlled trial of 221 participants (110 CHAIN, 111 usual care), the primary outcome, the Hip Disability and Osteoarthritis Outcome Score activities of daily living subscale at 10 weeks, improved significantly more in the CHAIN group (adjusted mean difference 6.9 points, 95% CI 2.5 to 11.2, p=0.0023). This informs clinical reasoning around delivery models rather than establishing a new standard of care: the between-group difference, while statistically significant, did not reach the pre-defined minimum clinically important difference of 7.4 points, so the practical relevance of the benefit to patients is uncertain.

The economic evaluation found CHAIN cost £4092 per quality-adjusted life year gained, below the NICE threshold, supporting feasibility of delivery within the NHS, and no treatment-related serious adverse events were reported between baseline and the 10-week assessment. The trial does not establish long-term outcomes beyond 10 weeks, and being conducted at a single UK centre with a predominantly White sample limits generalisability. Since usual care involved less structured group contact and support, some of the observed benefit may reflect attention or group engagement effects rather than the cycling intervention specifically.