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ADDUCTOR MAGNUS

ADDUCTOR MAGNUS. Origin: anterior fibers: inferior pubic ramus oblique fibers: ischial ramus posterior fibers: ischial tuberosity Insertion: proximal 1/3 of linea aspera adductor tubercle Action: adducts the thigh posterior fibers also extend and laterally rotate thigh Blood:

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ADDUCTOR MAGNUS

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  1. ADDUCTOR MAGNUS • Origin: • anterior fibers: inferior pubic ramus • oblique fibers: ischialramus • posterior fibers: ischialtuberosity • Insertion: • proximal 1/3 of lineaaspera • adductor tubercle • Action: • adducts the thigh • posterior fibers also extend and laterally rotate thigh • Blood: • muscular branches of profundafemoris • Nerve: • anterior fibers: obturator nerve, L2,3,4 • posterior fibers: tibial nerve of sciatic bundle, L4,5 • Actions • Adduction of the thigh at • the hip joint • Extension of the thigh at • the hip joint • Posterior tilt of the • pelvis at the hip joint • Elevation of the pelvis • at the hip joint • Innervation • The obturator nerve and • the sciatic nerve • Arterial Supply • Anterior head: the • femoral artery and the • deep femoral artery • Posterior head: the deep • femoral artery and the • inferior gluteal artery Concetta Langford - Anatomy - 2/22/11

  2. ADDUCTOR MAGNUS (cont’d) Concetta Langford - Anatomy - 2/22/11

  3. GRACILIS • Origin: body of pubis & inferior pubic ramus • Insertion: • medial surface of proximal tibia, inferior to tibialcondyle • contributes to the pez anserine • Action: • adducts thigh • flexes knee • medially rotates tibia • Blood: obturator artery • Nerve: obturator nerve, L2,3,4 • Actions • Adduction of the thigh at • the hip joint • Flexion of the thigh at • the hip joint • Flexion of the leg at the • knee joint • Anterior tilt of the pelvis • at the hip joint • Medial rotation of the • leg at the knee joint • Elevation of the pelvis at • the hip joint • Innervation • The obturator nerve • Arterial Supply • The deep femoral artery Concetta Langford - Anatomy - 2/22/11

  4. Gracilis (cont’d) Concetta Langford - Anatomy - 2/22/11

  5. OBTURATOR EXTERNUS • Origin: • medial surface of obturator foramen • external surface of obturator membrane • Insertion: trochantericfossa of femur • Action: • laterally rotates thigh • assists in flexion of hip joint • Blood: obturator artery • Nerve: obturator nerve, L2,3,4 • Actions • Lateral rotation of the thigh at the hip joint • Contralateral rotation of • the pelvis at the hip joint • Innervation • The obturator nerve • Arterial Supply • The obturator artery Concetta Langford - Anatomy - 2/22/11

  6. OBTURATOR EXTERNUS (cont’d) Concetta Langford - Anatomy - 2/22/11

  7. SARTORIUS • Origin: anterior superior iliac spine (ASIS) • Insertion: • upper medial surface of body of tibia • contributes to pez anserine • Action: • flexes hip and knee • laterally rotates thigh if flexed at the hip • Blood: • muscular branches of profundafemoris artery • saphenous branch of descending genicular artery • Nerve: branches of femoral nerve, L2,3 • DID YOU KNOW? • The sartorius is the longest muscle in the human body. • It is also one of three • muscles that attach into the pes anserine tendon. Concetta Langford - Anatomy - 2/22/11

  8. SARTORIUS (cont’d) Concetta Langford - Anatomy - 2/22/11

  9. RECTUS FEMORIS • Actions • Extension of the leg at the knee joint • Flexion of the thigh at the hip joint • Anterior tilt of the pelvis • at the hip joint • Innervation • The femoral nerve • Arterial Supply • The femoral artery and the deep femoral artery • Origin: • anterior head: anterior inferior iliac spine (AIIS) • posterior head: ilium just above the acetabulum • Insertion: • common quadriceps tendon into patella • tibialtuberosity via patellar ligament • Action: • extends knee • flexes hip • Blood: lateral femoral circumflex artery • Nerve: branches of femoral nerve, [L2],3,4 Concetta Langford - Anatomy - 2/22/11

  10. RECTUS FEMORIS (cont’d) Concetta Langford - Anatomy - 2/22/11

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