Name
Pronunciation
(BI-seps fe-MOR-us)
Origin/Proximal Attachment
Long Head: Ischial tuberosity Short Head: Lateral lip of linea aspera, proximal two thirds of supracondylar line & the lateral intermuscular septum
Insertion/Distal Attachment
Head of fibula & lateral tibial condyle
Action/Relevance
Flexes kneeExternally rotates hip (long head) Extends hip (long head)
Innervation
Long Head: Tibial nerve (L5, S1, 2) Short Head: Common Peroneal nerve (L5, S1)
Notes
Long head origin shared with semitendinosus
The tendon splits into 3 parts
main part goes around the lateral collateral lig
middle part fuses with the lateral collateral
deep fuses with the lateral condyle of the tibia