Joint degeneration (arthritis) developing after physical trauma (injury)
Because your rating depends on the degree of limitation, dislocation, or instability in the affected joint, the most useful evidence is anything that documents how that joint actually moves and functions. Range-of-motion measurements taken during a physical examination are central — these record how many degrees you can flex, extend, or rotate the joint. Notes showing pain on movement, weakness, or instability during testing also support higher ratings.
Imaging such as X-rays or MRI reports that confirm post-traumatic changes in the joint help establish the diagnosis and can show structural damage that limits motion. Surgical or treatment records, including notes about prior injuries to the joint, support the connection between trauma and the arthritis. If more than one joint is affected, you will want records documenting each joint separately. Statements from you or others describing how limited motion affects your work, daily tasks, or ability to use your arm, hand, or leg can help show the real-world impact of your symptoms.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.