Post-traumatic arthritis
This is another type of shoulder arthritis, although it does not only occur in the shoulder. Post-traumatic arthritis is a type of joint degeneration and inflammation that develops following a traumatic injury. Post-traumatic arthritis is also considered a type of osteoarthritis, the difference is that this type is usually triggered by physical trauma [4] that damages a joint, cartilage or bone.
If you’ve ever dislocated your shoulder or broken any of the bones in your shoulder joint, you’re more likely to eventually develop post-traumatic arthritis in that shoulder. Such injuries can cause damage that changes the mechanics of your shoulder joint, causing an accelerated wear-and-tear process.