Thigh muscles

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Author:
nhpatel
ID:
93074
Filename:
Thigh muscles
Updated:
2011-07-05 20:44:56
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Muscles thigh
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O, I, A, N, AS
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  1. Posterior Compartment muscles
    • Biceps femoris m., Long head
    • Semitendinosus m.
    • Biceps femoris m, short head
    • Semimembranosus m.
  2. Hamstring Muscles
    • Biceps femoris m. Long head
    • Semitendinosus m.
    • Semimembranosus m.

    'Bi long 2 Semis'
  3. Biceps Femoris Muscle (long head)
    • O: (PIM)Posteroinferomedial ischial tuberosity; shared with semitendinosus
    • I: Lateral aspect of fibular head and the anterior edge of the lateral tibial condyle; shared with short head of biceps femoris
    • A: Extends thigh, flexes and laterally rotates leg
    • N: Tibial part of Sciatic Nerve
    • AS: Profunda femoral perforating Arteries, inferior gluteal, and popliteal a.
  4. Semitendinosus Muscle
    • O: (PIM) Posteroinferomedial ischial tuberosity; shared with long head of biceps femoris
    • I: Proximal medial shaft of the tibia
    • A: Extends thigh, flexes and medially rotates leg
    • N: tibial part of Sciatic nerve
    • AS: Profunda femoral perforating arteries, inferior gluteal, and popliteal artery
  5. Biceps femoris Muscle (short head)
    • O: Lateral lip of linea aspera and lateral supracondylar line
    • I: Lateral aspect of the head of fibula and lateral condyle of the tibia; shared with long head of biceps of femoris muscle
    • A: Flexes and laterally rotates leg
    • N: Common fibular part of Sciatic Nerve
    • AS: Profunda femoris perforating arteries and popliteal artery
  6. Semimembranosus Muscle
    • O: (PSL) Posterosuperolateral ischial tuberosity
    • I: Groove of Semimembranosus muscle on posterior aspect of the medial tibial condyle and the posterior knee joint as the oblique popliteal ligament and fascia over the popliteus muscle
    • A: Extends the thigh, flexes and medially rotates the leg
    • N: Tibial part of sciatic nerve
    • AS: Profunda femoral perforating arteries, inferior gluteal, and popliteal arteries
  7. Pes Anserinus Muscles
    • Sartorius (anterosuperior)
    • Gracilis (Central)
    • Semitendinosus (posteroinferior)

    ' A Girl between 2 Sargents'
  8. Anterior Compartment muscles of thigh
    • Tensor Fascia Lata
    • Sartorius
    • Rectus Femoris
    • Vastus Intermedius
    • Vastus Lateralis
    • Vastus Medialis
    • Articularis Genu
  9. Tensor Fascia Lata Muscle
    • O: Lateral lip of iliac crest, anterior to iliac tubercle
    • I: IT band which attaches to Gerdy's tubercle
    • A: Flex and abduct thigh which stablizes hip during gait, extend leg which stabilizes knee during gait
    • N: Superior Gluteal
    • AS: Lateral femoral circumflex artery and superior gluteal artery
  10. Sartorius Muscle
    • -Longest Muscle in the body
    • O: ASIS
    • I: Proximal medial shaft of the tibia
    • A: Flex and laterally rotates thigh, flex leg, ALL combined is the TAILOR POSITION
    • N: Femoral
    • AS: Femoral
  11. Rectus Femoris Muscle
    • O: Straight head/Anterior head- AIIS
    • Reflected head/Posterior head- Iliac part of acetabular rim, externally
    • I: base of patella forming part of quadriceps tendon and the tibial tuberosity via patellar tendon
    • A: extend leg at knee, assists iliopsoas with flexion of thigh
    • N: femoral
    • AS: descending branch of lateral femoral circumflex artery
  12. Vastus Intermedius Muscle
    • O: superior 2/3 of femoral shaft
    • I: base of patella forming part of quadriceps tendon and tibial tuberosity via patellar tendon
    • A: Extend leg at knee, pull the patella laterally
    • N: femoral
    • AS: descending branch of lateral femoral circumflex artery
  13. Vastus Medialis Muscle
    • O: inferior intertrochanteric line, spiral line, medial lip of linea aspera, and the superior medial supracondylar line
    • I: Medial border of the patella forming part of the quadriceps tendon and then tibial tuberosity via patellar tendon
    • A: extend leg at the knee, pull patella medially
    • N: Femoral
    • AS: femoral, profunda fermoris, and superior medial genicular arteries
  14. Articularis Genu Muscle
    • O: Distal anterior Shaft of the femur
    • I: Posterior aspect of the suprapatellar bursa/ the superior extension of the capsule of the knee joint
    • A: tense the knee joint capsule/ suprapatellar bursa during extension to prevent impingement of the capsule
    • N: femoral
    • A: Superior medial genicuarl artery
  15. Quadriceps Femoris Muscles
    • 1. Rectus Femoris
    • 2. Vastus Medialis
    • 3. Vastus Intermedius
    • 4. Vastus Lateralis
    • Together they make up the quadriceps tendon, this then attaches the quardriceps femoris muscle to the patella, it envelopes patella and forms patellar tendon which inserts onto tibial tuberosity.
  16. Medial compartment of the thigh muscles
    • Pecitneus
    • Adductor longus
    • Adductor brevis
    • Adductor magnus
    • Gracilis
  17. Pectineus Muscle
    • O: Pecten Pubis
    • I: Pectineal line of the femur (crosses the obturator externus muscle)
    • A: adduct and flex thigh
    • N: femoral
    • AS: obturator artery and medial femoral circumflex
  18. Adductor Longus
    • O: anterior pubic body
    • I: medial lip of the linea aspera (middle 1/3)
    • A: adduct and flex the thigh; aids in lateral rotation of thigh
    • N: obturator nerve
    • AS: obturator artery and medial femoral circumflex
  19. Adductor Brevis
    • O: Anterior surface of the inferior pubic ramus
    • I: pectineal line of the femur and superior 1/2 of the medial lip of the linea aspera (shared with pectineus and adductor longus)
    • A: adduct and flex the thigh; aids in lateral rotation of thigh
    • N: obturator
    • AS: obturator artery and medial femoral circumflex
  20. Adductor Magnus
    • O: list anterior to posterior: a. inferior aspect of the inferior pubic ramus b. ischial ramus c. inferolateral part of ischial tuberosity
    • I: list superior to inferior: a. gluteal tuberosity (medial edge) b. medial lip of linea aspera and the medial supracondylar line c. supracondylar line and adductor tubercle
    • A: Adduct the thigh; aid in flexion of the thigh
    • N: obturator nerve and tibial part of sciatic nerve
    • AS: medial femoral circumflex, perforating arteries of profunda femoris, obturator, and popliteal
  21. Adductor Minimus (part of adductor magnus)
    • O: inferior pubic ramus
    • I: gluteal tuberosity
    • A: adduct the thigh; aid in flexion and extension of thigh
    • N: obturator
    • AS: medial femoral circumflex, perforating arteries, obturator, and popliteal
  22. Hamstring portion of adductor magnus
    • O: ischial tuberosity
    • I: adductor tubercle of femur
    • A: adduct the thigh; aid in flexion and extension of the thigh
    • N: tibial part of sciatic nerve (this is the only part of adductor magnus that is innervated by this nerve)
    • AS: medial femoral circumflex; perforating arteries, obturator, and popliteal
  23. Gracilis Muscle
    • O: Anterior aspect of the pubic body, inferior pubic ramus, pubic symphasis
    • I: proximal medial shaft of the tibia
    • A: adduct the thigh; flex the leg, aids in medial rotation of the leg ( at the knee)
    • N: obturator
    • AS: medial femoral circumflex; obturator and profunda femoris

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