The McKenzie Method delivered by credentialed therapists for chronic low back pain with directional preference: systematic review with meta-analysis.

Objective: To determine the effectiveness of the McKenzie Method compared to any conservative interventions on pain and disability in patients with chronic low back pain (LBP) with directional preference (DP).

Methods: We searched six electronic databases up to September 2022. Eligible randomized controlled trials were those assessing the McKenzie Method delivered by credentialed therapists for chronic LBP with DP.