Tibial Nerve

Question 1

Roots

Answer 1

L4-S3

Question 2

Motor functions

Answer 2

Posterior compartment of the leg 
Popliteus 
Flexor hallucis longus 
Flexor digitorum longus 
Tibialis posterior 
Plantaris 
Soleus 
Gastrocnemius

Question 3

Sensory functions

Answer 3

Skin on the posterolateral side of the leg (combines with common fibular to form sural)
Lateral side of the foot
Sole of the foot

Question 4

Tarsal tunnel syndrome

Answer 4

Tibial nerve compression within tarsal tunnel
Osteoarthritis
Rheumatoid arthritis
Post-trauma ankle deformities
Patients complain of paraesthesia in ankle and sole of foot (can radiate up the leg slightly)
Aggravated by exercise, relieved by rest
Treatment - anti-inflammatory drugs or changes in footwear
Flexor retinaculum can also be cut surgically to release pressure

Question 5

Damage to tibial nerve

Answer 5

Rare, often result of direct trauma, entrapment through a narrow space or compression over a long period
Results in loss of plantarflexion, loss of flexion of toes, weakened inversion (tibias anterior can still invert)