“…Isolated fractures of the lesser tuberosity are more rare injuries, with an estimated incidence of 0.46 per 100,000 population per year [3] . These have been described in 3 main types of injury: acute abduction/external rotation injury, chronic stress injury or acute injury in throwing or overhead adolescent athletes, and rarely acute injury on the basis of seizures (often in the setting of posterior fracture dislocation) [3] , [4] , [5] , [6] , [7] , [8] , [9] . The mechanism of injury in these cases has been thought to relate to traction effects of the subscapularis insertion upon the lesser tuberosity, either in resisting forced abduction/external rotation in acute trauma, exerting chronic or acute avulsive traction in the setting of adolescent overhead or throwing athletes, or undergoing violent contraction in the setting of seizures.…”