This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries Around Shoulder, Subject name: Orthopaedics
[{'content': 'Supraspinatus injury leads to which of the following: \nSelect and explain. \nA. Frozen shoulder, B. Winging of scapula, C. Cannot abduct, D. Cannot adduct', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Cannot abductRef. Apley's System of Orthopaedics & Fractures, 8th ed. 281-82In case of supraspinatus injury, abduction is restricted.Function of Rotator Cuff Muscle* Supraspinatus: Assists deltoid in abduction of arm by fixing head of humerus against the glenoid cavity.* Infraspinatus & Teres minor: Laterally (externally) rotates arm & stabilizes the shoulder joint.* Subscapularis: Internal rotation", 'role': 'assistant'}]