Muscles Of Leg Posterior Compartment

Question 1

Name the muscles in the superficial layer of this compartment

Answer 1

Gastrocnemius
Plantaris
Soleus

Question 2

Innervation of this compartment

Answer 2

Tibial nerve

Question 3

Bursae associated with calcaneal tendon

Answer 3

Subcutaneous calcaneal bursa (lies between skin and calcaneal tendon)
Deep bursa of calcaneal tendon (lies between tendon and calceneus)

Question 4

Gastrocnemius

Answer 4

Plantarflex of ankle joint

Flexor of knee

Question 5

Plantaris

Answer 5

Plantarflex of a joe joint

Flexor of knee

Question 6

Soleus

Answer 6

Plantarflex the foot at ankle joint

Question 7

Clinical relevance: ruptured calcaneal tendon

Answer 7

Partial or complete tear of tendon
Injury sustained during forceful plantarflexion of foot
Treatment is non surgical

Question 8

Name the muscles in the deep layer of this compartment

Answer 8

Popliteus
Tibialis posterior
Flexor digitorum longus
Flexor hallucis longus

Question 9

Popliteus

Answer 9

Laterally rotates femur on the tibia - unlocking the knee joint so flexion can occur
Only muscle in this layer that acts on knee

Question 10

Tibialis posterior

Answer 10

Inverts and plantarflexion the foot

Maintains medial arch of foot

Question 11

Flexor digitorum longus

Answer 11

Flexes the lateral four toes

Question 12

Flexor hallucis longus

Answer 12

Flexes great toe