The efficacy and safety of pilates exercise in patients with knee osteoarthritis: a systematic review with meta-analysis of randomized controlled trials.

Researchers reviewed eight studies involving 322 people with knee osteoarthritis to determine whether Pilates exercise could help reduce pain and improve function. Knee osteoarthritis is a common condition that causes joint pain, stiffness, and difficulty moving. The studies compared Pilates to no exercise, health education programs, or other types of exercise.

The researchers found that Pilates may help reduce pain and improve physical function compared to doing nothing or receiving only health education. However, when compared to other forms of exercise, Pilates didn't show any clear advantages. The studies also found that Pilates had limited effects on improving range of motion in the knee joint.

Important limitations affect these findings. The studies were generally small and of low quality, with high variation in how Pilates was taught and practiced. Most studies didn't properly track whether participants experienced any negative side effects, so the safety of Pilates for knee osteoarthritis remains unclear. Additionally, the researchers detected signs of publication bias, meaning negative studies may not have been published.

What this means for patients: While Pilates shows some promise for managing knee osteoarthritis symptoms, the evidence is currently weak and inconsistent. Pilates appears safe based on available data, but more rigorous research is needed. If you're considering Pilates for knee osteoarthritis, discuss it with your healthcare provider as part of a comprehensive treatment plan that may include acupuncture, physical therapy, or other approaches. If you choose acupuncture as part of your care, seek a qualified, licensed practitioner with experience treating musculoskeletal conditions.

This systematic review and meta-analysis evaluated eight RCTs (n=322) examining Pilates exercise for knee osteoarthritis. Compared to blank controls, Pilates significantly reduced WOMAC scores (SMD=-1.70; 95% CI: -3.14 to -0.25). One study comparing Pilates to health education showed significant reductions in VAS (MD=-1.74; 95% CI: -2.51 to -0.97) and WOMAC scores (SMD=-1.42; 95% CI: -2.39 to -0.45), but no significant ROM improvements. When compared to other exercise interventions, Pilates showed no significant advantages for VAS, WOMAC, or ROM outcomes. Risk of bias ranged from low to high, primarily due to lack of blinding. Funnel plot asymmetry and Egger's test suggested publication bias (p=0.0039 and 0.0154). GRADE evidence quality was rated "very low" for pain and function outcomes. Clinical takeaway: While Pilates may offer modest benefits for pain and function in KOA patients compared to inactive controls, evidence quality is poor with high heterogeneity, and safety data remain insufficient for definitive clinical recommendations.