Nerve supply and dematomes
Scenario:
A patient presents with foot drop after a prolonged sitting with legs crossed. You suspect
common fibular nerve compression.
Research questions:
1. How does the sciatic nerve divide into its branches?
The sciatic nerve is the largest nerve in the human body originating from the lumbosacral plexus
(L4-S3). As it travels down the posterior thigh, it eventually bifurcates into its two terminal
branches
, 1. The division of the sciatic nerve - The sciatic nerve divides at the popliteal fossa (Near
the knee) into:
2. Tibial nerve (L4-S3) - continues down posterior leg and into the foot
3. Common fibular nerve (Peroneal) nerve (L4-S2) wraps around the neck of the fibula and
splits further
● Branching patterns before division: Before it splits the sciatic nerve gives off muscular
branches to the Hamstring muscles (Except for the short head of the bicep femoris,
Scenario:
A patient presents with foot drop after a prolonged sitting with legs crossed. You suspect
common fibular nerve compression.
Research questions:
1. How does the sciatic nerve divide into its branches?
The sciatic nerve is the largest nerve in the human body originating from the lumbosacral plexus
(L4-S3). As it travels down the posterior thigh, it eventually bifurcates into its two terminal
branches
, 1. The division of the sciatic nerve - The sciatic nerve divides at the popliteal fossa (Near
the knee) into:
2. Tibial nerve (L4-S3) - continues down posterior leg and into the foot
3. Common fibular nerve (Peroneal) nerve (L4-S2) wraps around the neck of the fibula and
splits further
● Branching patterns before division: Before it splits the sciatic nerve gives off muscular
branches to the Hamstring muscles (Except for the short head of the bicep femoris,
