Gluteal Region & Posterior Thigh Muscles Flashcards
Gluteus Maximus
O: Post Illium, Sacrum, coccyx, Sacrotuberous lig
I: IT Tract, Gluteal tuberosity
A: Ext of femur, Lat. Rot
Inn: Inferior Gluteal N
Gluteus Medius and Minimus
O: External Illium btwn ant-post gluteal lines
I: Greater Trochanter
A: Med Rot & abd femur, keeps pelvis level
Inn: Superior Gluteal N
Piriformis
O: Ant sacrum and sacrotuberus ligament
I: Greater trochanter
A: Lateral Rotation, abduction of flexed thigh, Stabilize femoral head
Inn: Ventral Rami S1 & S2
Sup and Inf Gemelli
O: S - Ischial Spine / I - Ischial Tuberosity
I: Greater Trochanter
A: Lat Rot, Stabilization, ABD flexed thigh
Inn: S - N. Obturator / I - N. Quadratus femoris
Obturator Internus
O: Pelvic surface of obturate membrane
I: Greater trochanter
A: Lat. Rot, Abd flexed thigh, stabilize femoral head
Inn: N. Obturator Internus
Quadratus Femoris
O: Ischial Tuberosity
I: Quadrate Tubercle
A: Lat Rot, Abd flexed thigh, Stabilization
Inn: N Quadratus Femoris
Tensor Fascia Lata
O: ASIS and Ant Iliac crest
I: IT tract
A: Abd, Med Rot, Flex of femur, Stabilize trunk on thigh, keep pelvis level, knee extension
Inn: Femoral N
Semitendinosus
O: Ischial Tuberosity
I: Superior Medial Tibia (Pes Anserinus)
A: Ext thigh, flex and med rot leg
Inn: Sciatic N
Semimembranosus
O: Ischial Tuberosity
I: Posterior Medial Condyle of Tibia
A: Extends the femur, flex and med rotation of lower leg
Inn: Sciatic N
Biceps Femoris
O: LH - Ischial Tuberosity/SH- Linea aspera
I: Head of Fibular
A: Flex and lat rot of leg, ext femur
Inn: Sciatic N
What muscle is the landmark for determining Inferior and Superior Gluteal A&N’s
Piriformis
The TFL is innervated by which Nerve? What compartment does this muscle belong to?
Femoral N
Belongs to Gluteal Region
