Effectiveness of Cryotherapy on Pain Intensity, Range of Motion, Swelling and Function in the Postoperative Care of Musculoskeletal Disorders: A Systematic Review and Meta-Analysis of Randomised Controlled Trials

Why It Matters

The findings clarify that routine cryotherapy may not justify its cost or resource use in postoperative musculoskeletal rehabilitation, guiding clinicians toward interventions with stronger evidence of benefit.

Key Takeaways

• Pain reduction statistically significant, but under MCID.
• ROM gains small to medium, not clinically decisive.
• Swelling benefits minimal, low‑certainty evidence.
• Functional improvement modest, below clinically important threshold.
• High risk of bias reduces overall evidence certainty.

Pulse Analysis

Cryotherapy remains a staple in postoperative protocols for orthopaedic and sports‑medicine patients, driven by its theoretical ability to dampen nerve conduction, lower metabolic demand, and limit inflammatory swelling. Yet, despite widespread adoption, robust clinical data have been scarce, prompting the need for a comprehensive synthesis of randomized evidence. By aggregating results across diverse surgical procedures—from knee arthroplasty to ligament reconstruction—this meta‑analysis offers a panoramic view of cryotherapy’s true therapeutic value, positioning it within the broader landscape of evidence‑based postoperative pain management.

The pooled results reveal that while cryotherapy consistently lowers pain scores in the immediate, short‑term, and medium‑term windows, the magnitude of reduction never reaches the two‑point threshold considered clinically important. Similarly, range‑of‑motion gains, although statistically significant, translate to modest angular improvements that may not meaningfully accelerate functional recovery. Swelling and functional outcomes show either negligible effects or low‑certainty evidence, suggesting that any perceived benefits are likely driven by placebo or ancillary factors rather than a direct physiological advantage. For health systems weighing cost‑effectiveness, these data argue against blanket implementation of cryotherapy without clear patient‑specific indications.

Methodological shortcomings—particularly pervasive lack of blinding and variable allocation concealment—temper confidence in the findings and highlight a research gap. Future trials should prioritize rigorous designs, explore dose‑response relationships (temperature, duration, timing), and incorporate patient‑centered endpoints such as satisfaction and return‑to‑activity timelines. Until higher‑certainty evidence emerges, clinicians are advised to reserve cryotherapy for cases where individual preference or specific clinical scenarios justify its use, and to prioritize interventions with demonstrable, clinically meaningful outcomes.