Lower arm nerve group paralysis

Medical records that document the extent of muscle weakness or loss of function in the hand, wrist, and fingers are central at every rating level. For a complete rating, records showing paralysis of all the small hand muscles and some or all wrist and finger flexors — along with a finding of substantial loss of use of the hand — directly support that level. Nerve conduction studies and electromyography can show the degree of nerve damage and whether there is any remaining function.

For incomplete levels, examination findings that describe the severity of weakness, sensory loss, or impaired movement help place the condition at mild, moderate, or severe. If the involvement is purely sensory, that limits the rating to no higher than moderate under the regulation.

Statements from you or people who know you, describing how the condition affects gripping, lifting, writing, or other hand-dependent tasks at work and at home, can show real-world functional loss. Records noting which arm is affected — and whether that arm is your dominant or nondominant arm — matter because the regulation assigns different percentages based on that distinction.