Final answer:
A friend holding a deformed shoulder without any blood likely has a dislocation. This injury causes the bones in a joint to be displaced. Other options such as open fracture, muscle cramp, or sprain don't typically result in joint deformity without bleeding.
Step-by-step explanation:
Gauging from the symptoms described, where a friend is on the ground holding a deformed shoulder without any blood, it suggests that they might have sustained a dislocation. This injury occurs when the bones in a joint are forced out of their natural position, which can lead to a noticeable deformity in the shoulder area. Unlike an open fracture, which typically involves a break in the skin and visible bleeding, a dislocation might not break the skin. By contrast, a muscle cramp is typically a sudden, tight and intense pain caused by a muscle locked in spasm, but does not lead to joint deformity. A sprain involves the stretching or tearing of ligaments and may result in swelling and bruising but usually does not cause a joint to look deformed.