Muscles of the Anterior and Medial Thigh & Anterior Leg Muscles Flashcards
Iliopsoas
Origin: iliac fossa (Iliacus) and lower vertebae (psoasmajor)
Insertion: lesser trochanter of femur
Action: flexes hip
Sartorius
Origin: anterior/lateral ilium
Insertion: proximal/medial tibia
Action: flexes and laterally rotates thigh
Quadriceps Femoris
Origin: ilium and acetabulum
Insertion: patella and proximal tibia (via patellar ligament
Action: flexes thigh and extends knee
Vastus Lateralis
Origin: proximal/lateral femur
Insertion: patella and proximal tibia (via patellar ligament)
Action: extends knee
Vastus Medialis
Origin: proximal/medial femur
insertion: patella and proximal tibia (via patellar ligament)
Action: extends knee
Vastus Intermedius
Origin: proximal/anterior femur
insertion: patella and proximal tibia (via patellar ligament)
Action: extends knee
Tensor Fasciae latae
Origin: ilium
Insertion: tibia via iliotibial tract
Action: flexes, abducts, and medially rotates thigh
Adductors
definition - large muscle group made up of three separate muscles; commonly referred to as the groin muscles
Great, Major, League, Baseball, Players = Gracillis, adductor Magnus, adductor Longus, adductor Brevis, Pectineus
Adductor Magnus
Origin: anterior ischium and pubis
Insertion: broad insertion along posterior femur
Action: adducts, medially rotates, and flexes thigh
Adductor Longus
Origin: anterior pubis
Insertion: broad insertion along posterior femur
Action: adducts, medially rotates, and flexes thigh
Adductor Brevis
Origin: inferior pubis
Insertion: proximal/posterior femur
Action: adducts and medially rotates thigh
Pectineus
Origin: pubis
Insertion: proximal/posterior femur
Action: adducts, medially rotates, and flexes thigh
Gracilis
Origin: inferior pubis
Insertion: proximal/medial tibia
Action: adducts, medially rotates, and flexes thigh
Tibialis Anterior
Origin: lateral condyle of tibia
Insertion: medial cuneiform and metatarsal #1
Action: dorsiflexion and inversion of foot
