Integrating acupuncture with exercise-based physical therapy for knee osteoarthritis: a randomized controlled trial

Area of Science:

• Orthopedics
• Pain Management
• Integrative Medicine

Background:

• Knee osteoarthritis (OA) is a prevalent chronic condition with substantial morbidity and economic impact.
• The role of acupuncture as an adjunct to physical therapy for knee OA remains under-investigated.

Purpose of the Study:

• To compare the efficacy and safety of true acupuncture versus nonpenetrating acupuncture integrated with exercise-based physical therapy (EPT) for knee OA.
• To assess the impact of acupuncture needling technique on treatment outcomes in knee OA patients.

Main Methods:

• A randomized, double-blind, controlled trial involving 214 patients with chronic knee pain (Kellgren scores 2-3).
• Participants received 12 sessions of EPT followed by either true acupuncture or nonpenetrating acupuncture over 6-12 weeks.
• The primary outcome was the proportion of patients achieving at least 36% improvement in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMI) score at 12 weeks.

Main Results:

• Both true acupuncture and nonpenetrating acupuncture groups showed similar improvement rates (31.6% vs. 30.3%, P=0.5) when combined with EPT.
• No significant differences in minor adverse events were reported between the groups.
• A positive expectation of relief was associated with reported improvement, independent of treatment group, race, sex, or age.

Conclusions:

• Standard acupuncture did not demonstrate superior efficacy compared to nonpenetrating acupuncture when integrated with EPT for knee OA.
• The study could not definitively attribute improvements solely to EPT or acupuncture, with patient expectation emerging as a significant predictor of benefit.
• Further research is needed to elucidate the specific contributions of EPT and acupuncture to pain relief in knee OA.