Inflammation of the tibial nerve, which may cause pain, numbness, or weakness in the calf and foot.
Because the rating turns on how much function is lost, medical records and examination findings that document what your tibial nerve can and cannot do are central. For the 40% level, records showing absent plantar flexion, inability to adduct the foot, loss of toe flexion and separation, and no movement in the sole muscles directly match the complete paralysis criteria. Nerve conduction studies or electromyography that show the severity of nerve damage can support any level. For incomplete paralysis at the severe, moderate, or mild levels, examination findings that measure strength, sensation, and range of motion in the foot and toes help distinguish one level from another.
If your involvement is purely sensory, the regulation limits the rating to mild or at most moderate. Statements from you or people who know you describing how foot weakness or numbness affects walking, standing, climbing stairs, or doing your job can help show functional impact at each level. Records from physical therapy or specialist visits that track changes over time also help show the degree of incomplete paralysis.
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.
