<prompt> Weakest poion of shoulder joint capsule is:AnteriorPosteriorInferiorSuperior  <response>: C i.e. Inferior The inferior pa of shoulder joint capsule is the weakest areaQ When the shoulder joint is abducted, the lower surface of humerus head is suppoed by long head of triceps, which bows down- wards because of its length and gives little actual suppo to the humerus. 