Summary Muscles of the thigh anatomy

Thigh muscles
Muscle Origin Insertion
Medial compartment = Adductors (Quadriceps = 3x vastus + 1x rectus femoris)
Pectineus Superior pubic ramus Pectineal line of femur
Adductor magnus (adductor part =
lateral) Inferior pubic ramus Gluteal tuberosity
Adductor magnus (hamstring part
= medial) Ischial tuberosity Adductor tubercle
Adductor longus Anterior body of pubis Linea aspera

Body of pubis and inferior
Adductor brevis pubic ramus Proximal linea aspera
Gracilis Proximal tibia
Obturator
Anterior compartment = Knee Extensors, Hip flexors. 3x muscles thatTrochanteric
externus Obturator membrane fossa
only cross hip, 3x muscles that only cross knee, 2x mu
knee.

Psoas major Transverse processes of L1-L5
Lesser trochanter of femur

Iliacus Iliac fossa
Vastus lateralis (Quadratus
femoris)



Vastus intermedius (Quadratus Femoral shaft
femoris)
Quadriceps tendon


Vastus medialis (Quadratus
femoris)
Rectus femoris (Quadratus
femoris) Anterior inferior iliac spine

Sartorius (longest muscle in body) Anterior superior iliac spine Pes anserinus
Posterior compartment (Hamstrings) = Knee flexors, Hip extensors
Lower aspect of linea aspera +
Biceps femoris- short head lateral supracondylar ridge Head and neck of fibula
Biceps femoris- long head
Semimembranosus (M is the most
medial) Medial tibial condyle

Ischial tuberosity
Pes anserinus --> Medial
shaft of tibia (tapers out into
a long tendon and wraps
around semimembranosus
Semitendinosus and inserts medially to it)