Name
Pronunciation
(sem-e-mem-bruh-NO-sus)
Origin/Proximal Attachment
Ischial tuberosity
Insertion/Distal Attachment
Posterior medial aspect of medial tibial condyle
fibres join to form most of oblique popliteal ligament (& medial meniscus)
Action/Relevance
Flexes the knee
Extends the hip
Internally rotates the tibia
Pulls medial meniscus posteriorly during flexion
Innervation
Tibial nerve of sciatic bundle (L5, S1, 2)
Notes
Tendon splits into five discreet regions at the level of the knee.
to tubercle on posterior aspect of medial tibia
series of slips to the medial tibia immediately behind the medial collateral
thin fibrous expansion over popliteus
cord like tendon to inferior lip and adjacent groove on the back of the medial tibial condyle (deep to the medial collateral)
strong expansion that blends with the oblique popliteal lig.
Varies considerably in size.