Musculoskeletal – PACKRAT questions with correct answers

History & Physical/Orthopedics/Rheumatology Abduction of the shoulder against resistance helps localize pain in which of the following muscles of the shoulder girdle? Answers A. Supraspinatus B. Infraspinatus C. Teres minor D. Subscapularis CORRECT ANSWER Explanations (c) A. Abduction against resistance tests the supraspinatus. (u) B. Lateral rotation against resistance tests the infraspinatus and teres minor. (u) C. See B for explanation. (u) D. Medial rotation against resistance tests the subscapularis. History & Physical/Orthopedics/Rheumatology A 22 year-old male presents to the ED after sustaining a blow to the knee during football practice. The knee exam demonstrates significant forward translation of the tibia when the knee is in 15 degrees of flexion and external rotation at the hip. Which of the following knee maneuvers does this represent? Answers A. Abduction stress test B. Anterior drawer sign C. Lachman test D. McMurray test CORRECT ANSWER Explanations (u) A. The abduction stress test is performed to evaluate medial collateral ligament tears while applying valgus stress.