| Term | Definition |
|---|
| 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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