Arm internally rotated behind back, patient asked to lift forearm off their back
Subscapularis strength is evaluated against the examiner's resistance
Positive: inability to lift off back, weakness
Sensitivity: 62%; specificity: 100%
References
Baxter S, ed., McScheffrey G, ed. Toronto Notes: Comprehensive Medical Reference & Review for MCCQE 1 & USMLE 2. 26th ed. Toronto: Toronto Notes for Medical Students Inc; 2010.
Essential Evidence Plus. http://www.essentialevidenceplus.com. 2011. Accessed February 2011.
Magee D. Orthopedic Physical Assessment. 1st ed. Philadelphia:Saunders; 1986.