Thigh muscles

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Author:
mfawcett
ID:
125180
Filename:
Thigh muscles
Updated:
2011-12-31 06:57:03
Tags:
muscle anatomy thigh muscles nerve supply
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Description:
Origins, insertions and nerve supply of thigh muscles
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  1. Rectus femoris
    • - Anterior inferior iliac spine, with upper acetabular margin and capsule
    • --> patella ligament
    • - Femoral nerve
    • - Extend knee, flexes hip
  2. Vastus lateralis
    • - Lateral lip of linea aspera up to base of greater trochanter
    • --> lateral aspect of patella
    • - Femoral nerve
    • - Extends knee
  3. Vastus medialis
    importance?
    • - Medial lip of linea aspera (inferior to lesser trochanter and intertrochanteric line)
    • --> Medial border of patella
    • - Femoral Nerve
    • - Extends knee, Important for patella stability
  4. Vastus intermedius
    • - Upper 2/3 of shaft of femur
    • --> Deep surface of extensor quadriceps mechanism
    • - Femoral nerve
    • - Extends knee
  5. Sartorius
    • - Anterior superior iliac spine
    • --> upper part of medial surface of tibia
    • - Femoral nerve
    • - Combination of flexion and lateral rotation of hip, knee flexion, medial rotation of flexed knee
  6. Adductor magnus
    • - Pubic bone/ishiopubic ramus and ischial tuberosity
    • --> Linea aspera and adductor tubercle on medial femoral condyle
    • - Obturator nerve (ischial head is tibial nerve)
    • - Adducts hip
  7. Adductor brevis
    position in relation to longus?
    separates what?
    • - Pubic bone/ischiopubis ramus
    • --> Linea aspera
    • - Anterior to longus
    • - Separates 2 branches of obturator nerve
    • - Obturator nerve
    • - Adducts hip
  8. Adductor longus
    position?
    part of what?
    • - Ischiopubic ramus/pubic bone
    • --> linea aspera
    • - Lies more anteriorly and obliquely
    • - Medial boundary of femoral triangle
    • - Obturator nerve
    • - Adducts hip
  9. Gracilis
    • - Pubic bone and pubic ramus (very lateral)
    • --> upper part of medial tibial shaft
    • - Obturator nerve
    • - Adducts hip, flexes knee
  10. Pectineus
    • - Pectineal line on pubic bone
    • --> upper femur medial to insertion of adductor brecis
    • - Femoral nerve
    • - Adducts and flexes hip
  11. Biceps femoris
    • - Long head: Medial aspect of ischial tuberosity
    • Short head: Linea aspera
    • --> Lateral aspect of head of fibula
    • - Tibial nerve (Short head common fibular nerve)
    • - Extends hip (not short head), flexes knee
  12. Semitendinosus
    where does tendon go?
    • - Inferomedial aspect of ischial tuberosity
    • Tendon passes behind medial femoral condyle
    • --> medial aspect of upper tibial shaft
    • - Tibial nerve
    • - Extends hip, flexes knee
  13. Semimembranosus
    • - Posterolateral aspect of ischial tuberosity
    • --> groove on posterior aspect of medial tibial condyle, with expansions that diverge obliquely across capsule of knee joint and inferiorly over popliteal surface to soleal line of tibia
    • - Tibial nerve
    • - Extends hip, flexes knee

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