Medial Compartment of the Thigh

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Medial thigh compartment muscles	Origin	Insertion	Action	Nerve roots	Nerves
Adductor Brevis	Body and inferior ramus of pubis (lateral to origin of gracilis)	Pectineal line and proximal part of linea aspera of femur	Adducts thigh; weak hip flexor		Obturator nerve (anterior or posterior division L2–L4)
Adductor Longus	External surface of body of pubis (triangular depression inferior to pubic crest and lateral to pubic symphysis)	Linea aspera on middle one-third of shaft of femur	Adducts thigh; assists in hip flexion (especially from extended position) and medial rotation	L2 L3 L4	Obturator nerve (anterior division L2–L4)
Adductor Magnus	Adductor part – inferior pubic ramus and ischial ramus; Hamstring part – ischial tuberosity	Adductor part – posterior femur (gluteal tuberosity, linea aspera, medial supracondylar line); Hamstring part – adductor tubercle of femur	Adducts thigh (powerfully); Adductor part flexes thigh; Hamstring part extends thigh		Adductor part – Obturator nerve (posterior division L2–L4); Hamstring part – Tibial division of sciatic nerve (L4–S1)
Adductor Minimus	Ischiopubic ramus (inferior pubic ramus to ischial ramus)	Linea aspera (proximal medial lip) and adductor tubercle (via shared tendon)	Adducts thigh; assists lateral rotation and extension of thigh		Obturator nerve (L2–L4) and tibial division of sciatic nerve (L4–L5) – same innervation as adductor magnus
External Obturator	External surface of obturator membrane; rim of pubis and ischium bordering obturator foramen	Trochanteric fossa on medial surface of greater trochanter	Externally rotates thigh; assists in adduction of hip; stabilizes pelvis (by pulling femoral head into acetabulum)		Posterior division of obturator nerve (L3–L4)
Gracilis	ischiopubic ramus	tibia (pes anserinus)	flexes, medially rotates, and adducts the hip		anterior branch of Obturator Nerve
Pectineus	pecten pubis and adjacent superior pubic ramus	pectineal line of the femur	adduct the thigh at the hip		Femoral Nerve