Sural nerve injury

1. Where does the sural nerve originate from?
2. What area does the sural nerve provide sensation to?
3. How is the sural nerve commonly injured?
4. How does sural neuropathy present?

Answers:
1. From branches of the tibial and common peroneal nerve. It passes from the proximal calf to the ankle posterior to the lateral malleolus.
2. The sural nerve provides sensation to the lateral calf and foot.
3. Compression from tight socks, Baker's cyst, laceration.
4. Abnormal sensation to the lateral calf and foot. There may be a positive Tinel's sign along the nerve.