Which one of the following is not a symptom of a dislocated shoulder joint?

The correct option is Visible bleeding.

A dislocated shoulder joint occurs when the head of the humerus (upper arm bone) is forced out of the glenoid cavity (shoulder socket). This type of injury is typically characterized by the following common symptoms:
1. Pain: Severe pain is immediately felt due to the stretching and tearing of surrounding ligaments, muscles, and joint capsules, as well as pressure on the nerves.
2. Swelling: The body's inflammatory response to the trauma leads to rapid fluid accumulation and swelling around the affected shoulder area.
3. Instability of joint: Because the bones are no longer properly aligned and the supportive ligaments have been stretched or torn, the joint loses its structural integrity and becomes highly unstable.

In contrast, a shoulder dislocation is a closed joint injury. While internal bruising (ecchymosis) can occur over time, visible bleeding (external bleeding) is not a standard symptom of a dislocated shoulder joint unless the skin has been broken by an external cut or open wound during the trauma.