Effectiveness of manual physical therapy for painful shoulder conditions: a systematic review

Multiple disease-specific systematic reviews on the effectiveness of physical therapy intervention for shoulder dysfunction have been inconclusive. To date, there have been two systematic reviews that examined manual therapy specifically but both considered effects within diagnoses. The purpose of this systematic review was to identify the effectiveness of manual therapy to the glenohumeral joint across all painful shoulder conditions. A search of MEDLINE, CINAHL, Web of Science, and Cochrane Central Register of Randomized Controlled Trials for articles dated 1996 to June 2009 was performed. Inclusion for review were manual therapy performed to the glenohumeral joint only; non-surgical painful shoulder disorders; subjects 18-80 years; and outcomes of range of motion, pain, function, and/or quality of life. Quality assessment was performed using the PEDro scale with subsequent data extraction. Seventeen related articles were found with seven fitting the inclusion criteria. The average PEDro score was 7.86, meeting the cutoff score for high quality. Significant heterogeneity in outcome measures prohibited meta-analysis. Five studies demonstrated benefits utilizing manual therapy for mobility, and four demonstrated a trend towards decreasing pain values. Functional outcomes and quality-of-life measures varied greatly among all studies. Manual therapy appears to increase either active or passive mobility of the shoulder. A trend was found favoring manual therapy for decreasing pain, but the effect on function and quality of life remains inconclusive. Future research utilizing consistent outcome measurements is necessary.