Injury to muscles that rotate the forearm outward at the elbow.
Because the severity levels are defined in § 4.56, the evidence that helps your claim is whatever shows where your injury falls within those criteria. Medical records documenting the original wound or injury to the biceps, brachialis, or brachioradialis are a starting point. Examination findings that measure elbow flexion strength and range of motion, as well as any weakness or limitation in forearm supination, speak directly to how severely the muscles are functioning.
Records noting muscle atrophy, scarring, or damage to the muscle mass and its surrounding tissue can help show a higher level of severity. If the injury also produces shoulder instability — because the long head of the biceps stabilizes the shoulder joint — documentation of that finding is relevant. Statements from you or people who know you that describe how weakness or pain in the elbow and forearm affects your ability to carry, lift, or perform work and daily tasks can show the real-world impact of the injury. Consistent findings across multiple examinations over time can help show that the condition is not slight or moderate.
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.
