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.
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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.

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3
Q

M.obturatorius externus

A

O: Outer surface of pelvis around the for.obturatum
I: Fossa trochanterica
A: Supination - lat. rotation of HL

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4
Q

M.gemelli

A

O: Lat. side on corpus ossis ischii
I: Fossa trochanterica
A: Supination - lat. rotation of HL

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5
Q

M.obturatorius internus

A

O: Inner surface of pelvis around the for.obturatum
I: Fossa trochanterica
A: Supination - lat. rotation of HL

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