Spinal high-velocity low amplitude manipulation in acute nonspecific low back pain: a double-blinded randomized controlled trial in comparison with diclofenac and placebo.

Study Design: A randomized, double-blinded, placebo-controlled, parallel trial with 3 arms.

Objective: To investigate in acute nonspecific low back pain (LBP) the effectiveness of spinal high-velocity low-amplitude (HVLA) manipulation compared with the nonsteroidal anti-inflammatory drug diclofenac and with placebo.

Summary Of Background Data: LBP is an important economical factor in all industrialized countries.