Compartments Of The Leg

Question 1

Anterior compartment of the leg
- Nerve supply (spinal nerve contributions, 3)

• Vascular supply
• Muscles (4)
• Muscle action (3)

Answer 1

• Deep peroneal nerve (L4, L5, S1)
• Anterior tibial artery
• Tibialis Anterior
• Extensor Hallucis Longus
• Extensor Digitorum Longus
• Peroneus Tertius
• Dorsiflexion, foot inversion/eversion

Question 2

Deep Peroneal Nerve

1. Motor innervation
   a. leg-4
   b. foot-2
2. Sensory innervation (2)

Answer 2

1a. Tibialis anterior, EHL, EDL, and Peroneus tertius
1b. Lateral terminal branch innervates Extensor hallucis brevis and extensor digitorum brevis

2. Articular branch to the ankle joint
   Medial terminal branch to the 1st dorsal web space