Limb Compartments

Question 1

Compartments of the thigh

Answer 1

Formed by septae passing from the femur to the fascia lata

Anterior compartment
Nerve - Femoral
Muscles - Iliacus, Tensor fasciae latae, Sartorius, Quadriceps femoris
Blood supply - Femoral

Medial compartment
Nerve - Obturator
Muscles - Adductor longus/magnus/brevis, Gracilis, Obturator externus
Blood supply - Profunda femoris and obturator

Posterior compartment (2 layers)
Nerve - Sciatic
Muscles - Semimembranosus, Semitendinosus, Biceps femoris
Blood supply - Branches of Profunda femoris

Question 2

Compartments of the lower leg

Answer 2

Separated by the interosseous membrane (anterior and posterior compartments), anterior fascial septum (separate anterior and lateral compartments) and posterior fascial septum (separate lateral and posterior compartments)

Anterior compartment
Nerve - Deep peroneal
Muscles - Tibialis anterior, Extensor digitorum longus, Extensor hallucis longus, Peroneus tertius
Blood supply - Anterior tibial

Posterior compartment
Nerve - Tibial
Muscles - deep and superficial compartments (separated by deep transverse fascia)
Deep - Flexor hallucis longus, Flexor digitalis longus, Tibialis posterior, Popliteus
Superficial - Gastrocnemius, Soleus, Plantaris
Blood supply - Posterior tibial

Lateral compartment
Nerve - Superficial peroneal
Muscles - Peroneus longus/brevis
Blood supply - Peroneal