Paralysis of the radial nerve, which may cause weakness in wrist and finger extension.
Medical records that document your specific functional deficits help show which rating level applies. For a complete paralysis rating, records and examination findings would need to show the full picture: perpetual flexion of the hand and fingers, inability to extend the wrist or fingers, adduction of the thumb, and weakened supination and elbow motion, along with seriously impaired hand grip.
For incomplete paralysis, the severity level matters. Examination findings that measure grip strength, range of motion, and sensory loss help distinguish mild, moderate, and severe. If your nerve damage affects only sensation and not motor function, the regulation limits the rating to mild or at most moderate.
Statements from you or people who know you describing how wrist drop, grip weakness, or loss of hand control affects your work tasks and daily activities can help show real-world functional impact. Records noting which hand is your dominant hand are relevant because the major and minor arm ratings differ at most levels.
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.
