This 2021 meta-analysis evaluated the efficacy of extracorporeal shock wave therapy (ESWT) in treating myofascial pain syndrome (MPS) of the neck and shoulder. Analyzing 11 randomized controlled trials, the study found that ESWT significantly improved pain intensity (SMD = 0.67; 95% CI: 0.11 to 1.23; P = 0.02) and pressure