Deep muscles of the buttock Flashcards
1
Q
The muscles
A
M.quadratus femoris M.obturatorius externus M.gemelli M.obturatorius internus All originate from the pelvis, and insert on fossa trochanterica. All supinates the HL, quadratus femoris also ext. the hip.
2
Q
M.quadratus femoris
A
O: Vent. surface of tabula ossis schii
I: Fossa trochanterica
A: Extension of hip joint and lat. rotation of HL.
3
Q
M.obturatorius externus
A
O: Outer surface of pelvis around the for.obturatum
I: Fossa trochanterica
A: Supination - lat. rotation of HL
4
Q
M.gemelli
A
O: Lat. side on corpus ossis ischii
I: Fossa trochanterica
A: Supination - lat. rotation of HL
5
Q
M.obturatorius internus
A
O: Inner surface of pelvis around the for.obturatum
I: Fossa trochanterica
A: Supination - lat. rotation of HL
