Greater tubercle Lesser tubercle head of humerus肱骨头 anatomical(surgical)neck 解剖(外科)颈 greater(lesser tubercle 大(小)结节 Normal humerusNormal Humerus head of humerus 肱骨头 anatomical(surgical)neck 解剖(外科)颈 greater(lesser)tubercle 大(小)结节 Greater tubercle Lesser tubercle