Lower limb muscle strength in patients with low back pain: a systematic review and meta-analysis.

Objective: To systematically review the published studies that compare lower limb muscle strength in patients with low back pain to matched healthy controls.

Methods: We searched Medline, SciELO, Cumulative Index to Nursing and Allied Health (CINAHL), and Scopus up until December 2017. Studies comparing lower limb muscle strength in people diagnosed with low back pain to healthy control participants were included in the systematic review.