Which of the following movements will be affected if the greater tubercle of the humerus is lost:: (A) Abduction and lateral rotation, (B) Adduction and flexion, (C) Adduction and medial rotation, (D) Flexion and medial rotation
Answer is A. A i.e. Abduction & lateral rotation The movement most commonly affected in greater tuberosity fracture is external rotation in abductionQ This is very obvious because the muscles inseed in greater tuberosity of humerus & their actions are as following.