I felt amphetamine has entactogen-like effects, before even knowing that they were closely related; imagine what someone knowingly ingesting amphetamine as an entactogen might feel. Why are many entheogens and entactogens illegal if they have many benefits and miniscule possible harm? Well, the short answer is for no reason.
Dislocated shoulder. A dislocated shoulder happens when your upper arm pops out of your shoulder socket. The shoulder is one of the easiest joints to dislocate because the ball joint of your upper arm sits in a very shallow socket. This makes the arm extremely mobile and able to move in many directions, but also means it isn't very stable.
Osteoarthritis of the shoulder is a gradual wearing of the articular cartilage that leads to pain and stiffness. As the joint surface degenerates, the subchondral bone remodels, losing its sphericity and congruity. The joint capsule also becomes thickened, leading to further loss of shoulder rotation.