OIN Posterior Thigh Flashcards
Common Proximal Attachment
ischial tuberosity (except biceps femoris short head)
Common innervation
Tibial division of the sciatic nerve (except biceps femoris short head)
Common functions
leg flexion at knee
thigh extensions at hip (except biceps femoris short head)
Semitendinosus attachments
O: ischial tuberosity
I: Pes Anserinus on AM superior tibia
Semitendinosus Function
extend thigh
flex leg
medially rotate leg
Semitendinosus Innervation
Tibial Division of the Sciatic Nerve
Pes Anserinus tendons superifical to deep
sartorius
gracilis
semitendinosus
SGT FOT
Semimembranosus attachments
O: ischial tuberosity
I: posterior part of the medial tibial condyle (not pes anserinus)
Function of Semimembranosus
Extend thigh
flex leg
medial rotation of leg
innervation of semimembranosus
tibial division of sciatic N
semimembranosus two tendons
one to the medial tibial condyle (attachment pt)
oblique popliteal ligament to reinforce knee and form part of popliteal fossa floor
biceps femoris long head attachments
O: ischial tuberosity
I: lateral aspect of fibular head (not pes ansirinus)
biceps femoris long head function
extend thigh
flex leg
laterally rotate flexed leg
biceps femoris long head innervation
tibial division of scaitic n
biceps femoris short head attachment
O: linea aspera and lateral supracondylar line
I: lateral aspect of fibular head (not pes ansirinus)
biceps femoris short head function
flex leg,
laterally rotate flexed leg
NO EXTENSION
biceps femoris short head innervation
common fibular division of sciatic N (different from others)
Adductor Magnus hamstrings portion attachment
O: ischial tuberosity
I: adductor tubercle on medial epicondyle
Adductor Magnus hamstrings portion function
extend thigh
NO KNEE MOVEMENT
Addcutor Magnus hamstrings portion inneration
tibial division of sciatic N.
