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Origin
Sciatic nerve divides into
1. tibial nerve
2. common peroneal nerve
Branches to
1. deep and superficial
2. superficial--> p. longus and brevis, medial and lateral cutaneous branches
Features of CPN lesion
1. Foot drop
2. weakness of :
a. foot dorsiflexion and eversion
b. extensor hallucis longus
3. wasting of ant tibial and peroneal muscles
4. sensory loss of dorsum of foot and lower part of lateral leg
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