| Plantar Nerves |
 Medial plantar nerve
- innervates
- Abductor Hallucis
- FHB
- FDB
- lumbircals to 2nd and 3rd toes
- at risk
- proper branch of medial plantar nerve at risk with medial-plantar approach to the tibial sesamoid
- Lateral plantar nerve
- innervates (everything else)
- adductor hallucis
- quadratus plantae
- all interossei muscles
- lateral two lumbricals
- abductor digiti minimus (via Baxter's nerve - the first branch of LPN)
- Physical exam
- injury to lateral/medial plantar nerve leads to weak or absent MTP flexion (intrinsic minus)
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| Sural Nerve |
 Provides dorsal sensory in 4th web space (70-80% of time)- Most vulnerable during
- extensile lateral approach to calcaneus
- screw placement for stress fx of proximal 5th MT
- Achilles tendon repair - especially percutaneous technique
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| Deep peroneal Nerve |
- Innervates EDB, and EHB in foot
- Found compressed beneath inferior retinaculum in anterior tarsal tunnel syndrome
- Lateral branch
- most vulnerable during removal of calcaneonavicular bar
- during approach for reduction of Lisfranc injury
- Injury
- injury leads to weak or absent EDB and EHB function
- this can be seen with trauma or CMT
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| Superficial Peroneal Nerve |
- Medial branch
- dorsomedial aspect of hallux
- most vulnerable during bunion surgery
- Lateral cutaneous branch
- emerges from deep fascia 12-15 cm proximal to tip of lateral malleolus
- most vulnerable with
- arthroscopic anterolateral portal
- ORIF of distal fibula fx (especially Weber C)
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