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Anterior Compartment Muscles of the Hip and Thigh
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the muscles in this compartment flex the femur at the hip and extend the leg at the knee
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terms list
Anterior Compartment Muscles of the Hip and Thigh
the muscles in this compartment flex the femur at the hip and extend the leg at the knee
Posterior Compartment Muscles of the Hip and Thigh
the muscles in this compartment extend the thigh and flex the leg
Medial Compartment
the muscles in this compartment adduct the thigh
Muscles of Hip Flexion
iliopsoas (prime mover), tensor fasciae latae and rectus femoris all perform the same action
Iliopsoas
prime mover of hip flexion that share common insertion tendon
Muscles of the Iliopsoas
iliacus and psoas make up this composite muscle that share the same insertion tendon
Iliacus
O: iliac fossa and crest, lateral sacrum / I: via common tendon to lesser trochanter of femur
Iliacus and Psoas
Prime mover(s) of thigh flexion (with thigh stabilized flexes torso on thigh)...take a bow!
Psoas
O: TP's, bodies and discs of T12-L5 / I: via common tendon to lesser trochanter of femur
Tensor Fasciae Latae
O: ASIS and Anterior aspect of iliac crest / I: anterolateral tibial condyle via iliotibial tract
Tensor Fasciae Latae
action of this muscle: flexion, abduction of thigh (synergist of ilipsoas, glut. max, med and min), med rotation of thigh, stabilizes knee
Rectus Femoris
Middle part of quadriceps femoris. O: AIIS and (superior margin of acetabulum) / I: tibial tuberosity via patellar tendon A: hip flexion; knee extension
Muscles that Extend the Knee
shared action of these muscles: rectus femoris, vastus lateralis, vastus medialis
Sartorius
O: ASIS / I: medial proximal tibia (Pes Anserine)/ A: hip flexion, abduction, ext. rotation and knee flexion
Muscles of Pes Anserine
insertion point of the conjoined tendons of three muscles onto the anteromedial proximal tibia
"SGT"
muscles that insert onto the Pes Anserine (insertion point of conjoined tendons of 3 muscles) sartorius, gracillus and semi tendinosis
Vastus Lateralis
O: greater trochanter, intertrochanteric line/ I: tibial tuberosity via patellar tendon / A: knee extension
Vastus Medialis
O: linea aspera, intertrochanteric line / I: tibial tuberosity via patella tendon / A: knee extension
Vastus Intermedius
O: anterior & lateral proximal femur / I: tibial tuberosity via patellar tendon / A: knee extension
Adductor Muscles and Sartorius
medially located muscles on the thigh that also assist in thigh flexion
Adductor Magnus
O: ischial and pubic rami and ischial tuberosity / I: linea aspera & adductor tubercle of femur / A: anterior part adduction & medial rotation of thigh, post part synergist of hamstrings hip ext.
Adductor Longus
O: pubis (near pubic symphasis) / I: linea aspera / A: adducts, flex and medial rotates thigh
Adductor Brevis
O: pubis - body and inferior ramus / I: linea aspera / A: adducts & medial rotates thigh
Pectineus
O: pectineal line of pubis / I: line between lesser trochanter to linea apsera / A: adducts, flex and medial rotates thigh
Gracillis
O: pubis - body and inferior ramus/ I: pes anserine - proximal medial tibia / A: adducts, flex and medial rotates thigh
Muscles of Thigh Extension & Knee Flexion
biceps femoris, semitendenosus and semimembranosus all perform these (2) actions of the posterior compartment
Gluteus Maximus
O: posterior Ilium, sacrum and coccyx / I: gluteal tuberosity of femur and iliotibial tract / A: Major extensor of thigh, also abduction and lateral rotation
Gluteus Medius
O: posterior lateral surface of Ilium below crest / I: greater trochanter of femur / A: abduction and medial rotation of thigh, important in holding pelvis level while walking
Gluteus Minimus
O: lateral ilium below gluteus medius / I: greater trochanter of femur / A: abduction, medial rotation of thigh
Gastrocnemius
forceful extension is aided by this muscle and is most effective when the hip is flexed, as rising from a chair or climbing stairs of running
Hamstrings
group of muscles located in the posterior thigh
Biceps Femoris
O: ischial tuberosity (long head) linea aspera and distal femur (short head) / I: via tendon to lateral tibial condyle and head of fibula / A: long head ext. thigh, long and short head: flex knee w/knee flexed lat. rotation
Semitendinosis
O: ischial tuberosity w / long head biceps femoris / I: pes anserine (SGT) medial aspect upper tibial shaft / A: extends thigh at hip, flex knee - med. rotation w/knee flexed
Semimembranosus
O: ischial tuberosity / I: medial condyle of tibia (expansion of the tendon forms part of oblique popliteal ligament) / A: extends thigh at hip, flex knee - med. rotation w / knee flexed
PGOGOQ
mneumonic for thigh external rotation muscles
Piriformis
O: anterolateral surface of sacrum / I: greater trochanter of femur / A: lateral rotation of hip, stabilizes pelvis / hip joint
Gemellus Superior & Inferior
O: superior: ischial spine, Inferior: ischial tuberosity / I: greater trochanter of femur / A: lateral rotation of hip , stabilizes hip joint
Obturator Internus
O: inner surface of obturator membrane and foramen / I: greater trochanter of femur / A: lateral rotation of hip, stabilizes pelvis / hip joint
Obturator Externus
O: outer surface of obturator membrane and foramen / I: greater trochanter of femur / A: lateral rotation of hip, stabilizes pelvis / hip joint
Quadratus Femoris
O: ischial tuberosity / I: greater trochanter of femur / A: lateral rotation of hip, stabilizes pelvis / hip joint
Thigh Adduction
the 5 muscles that do this movement are: adductor magnus, adductor longus, adductor brevis and the pectineus and gracilis muscles. Name the movement.
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