Vastus medialis
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vastus medialis. ORIGIN- intertronchanteric line of femur; medial aspect of linea aspera INSERTION- common quadriceps tendon into patella, tibial tuberosity via patellar ligament ACTION- extends the calf at the knee

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Vastus medialis

vastus medialis

  • ORIGIN- intertronchanteric line of femur; medial aspect of linea aspera

  • INSERTION- common quadriceps tendon into patella, tibial tuberosity via patellar ligament

  • ACTION- extends the calf at the knee

  • BLOOD- muscular branches of profunda femoris artery; saphenous branch of descending genicular artery

  • NERVE- femoral nerve, (L2), L3, 4


Vastus medialis1

vastus medialis


Iliacus

iliacus

  • ORIGIN- inner surface of upper iliac fossa; anterior inferior iliac spine; anterior capsule of hip joint

  • INSERTION- iliopsas tendon to the lesser trochanter of the femur; medial aspect of the linea aspera

  • ACTION- powerfully flexes the thigh at the hip; external rotation of the femur

  • BLOOD- iliolumbar artery; deep circumflex iliac artery

  • NERVE- femoral nerve, L2, 3, 4


Iliacus1

iliacus


Psoas major

psoas major

  • ORIGIN- vertebral bodies of T12-L4 and the intervening intervertebral discs; transverse processes of L1-L4

  • INSERTION- iliopsoas tendon to the lesser trochanter of the femur; medial aspect of the lineaaspera

  • ACTION- flexes the thigh at the hip; external rotation of the femur

  • BLOOD- iliolumbar artery; lumbar artery; subcostal artery

  • NERVE- ventral rami, L1, 2, 3, 4


Psoas major1

psoas major


Pectineus

pectineus

  • ORIGIN- pictineal line of the pubis; superior pubic ramus

  • INSERTION- the pectineal line of the femur

  • ACTION- flexes the thigh at the hip; adducts thigh at the hip; medially rotates thigh at the hip

  • BLOOD- muscular branches of medial femoral circumflex artery

  • NERVE- A: femoral nerve, L3, 4 or B: obturator nerve, L2, 3, 4 or A&B: femoral L3, 4 and accessory obturator L3, 4


Pectineus1

pectineus


Gastrocnemius

gastrocnemius

  • ORIGIN- medial head: just above medial condyle of femur; lateral head: just above lateral condyle of femur

  • INSERTION- calcaneus via lateral portion of calcaneal tendon

  • ACTION- plantarflexes the foot at the ankle; flexes the calf at the knee; stablilizes ankle and knee when standing

  • BLOOD- sural branches of popliteal artery; muscular branches of peroneal artery; posterior tibial artery

  • NERVE- tibial nerve, S1, 2


Gastrocnemius1

gastrocnemius


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