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Biceps Femoris (nerve)
long head: tibial portion of sciatic nerve (S1, S2, S3)
short head: common peroneal part of sciatic nerve (L5, S1, S2)
Gluteus Maximus (origin) (4)
outer surface of ilium behind posterior gluteal line, adjacent posterior surface of sacrum and coccyx, sacrotuberous ligament,
aponeurosis of erector spinae (sacrospinalis)
Gluteus Minimus (origin)
outer surface of ilium between middle (anterior) and inferior gluteal lines
Tensor Fascia Lata (origin)
outer edge of iliac crest between anterior superior iliac spine and iliac tubercle
Biceps Femoris (origin)
long head: ischial tuberosity, sacrotuberous ligament
short head: linea aspera, lateral supracondylar ridge, lateral intermuscular septum
Vastus Lateralis (origin)
inferior border of greater trochanter,
lateral lip of linea aspera of femur
Vastus Lateralis (insertion)
lateral margin of patella, then by patellar ligament to tuberosity of tibia
Vastus Medialis (origin)
medial lip of linea aspera of femur
medial intermuscular septum of adductor magnus and adductor longus
medial supracondylar ridge
Vastus Medialis (insertion)
medial border of patella, then by patellar ligament into tibial tuberosity, medial condyle of tibia
Vastus Intermedius (origin)
anterior and lateral surfaces of upper two-thirds of femur,
lateral intermuscular septum,
lateral supracondylar ridge
Vastus Intermedius (insertion)
deep aspect of quadriceps tendon, then through patella to tibial tuberosity
Rectus Femoris (origin)
anterior head: anterior inferior iliac spine
posterior head: ilium above acetabulum
Adductor Brevis (insertion)
from below lesser trochanter to linea aspera and into proximal part of linea aspera
Biceps femoris (action)
Short head: Extension of Hip, Flexion of Knee, & Lateral Rotation of Flexed Knee
Long head: Flexion of knee & lateral rotation of flexed knee
flexes, abducts & laterally rotates thigh
flexes and slightly medially rotates leg @ knee joint after flexion
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