Muscles Of The Medial Compartment Of The Thigh Flashcards
(26 cards)
What are the 6 muscles in the medial compartment of the thigh?
Gracilis, Pectineus, Adductor Longus, Adductor Brevis, Adductor Magnus, Obturator Externus
What is the origin of the Gracilis?
A line on the external surfaces of the body of the pubis, the inferior pubic ramus, and the ramus of the ichium
What is the insertion of the Gracilis?
Medial surface of proximal shaft of tibia
What is the innervation of the Gracilis?
Obturator Nerve (L2, L3)
What is the function of the Gracilis?
Adducts thigh at hip joint and flexes leg at knee joint
What is the origin of the Pectineus?
Pectineal line (pecten pubis) and adjacent bone of pelvis
What is the insertion of the Pectineus?
Oblique line extending from base of lesser trochanter to linea aspera on posterior surface of proximal femur
What is the innervation of the Pectineus?
Femoral Nerve (L2, L3)
What is the function of the Pectineus?
Adducts and flexes thigh at the hip joint
What is the origin of the adductor Longus?
External surface of body of pubis (triangular depression inferior to pubic crest and lateral to pubic symphysis
What is the insertion of the Adductor Longus?
Linea aspera on middle one-third of shaft of femur
What is the innervation of the adductor Longus?
Obturator Nerve (anterior division) (L2, L3, L4)
What is the function of the adductor Longus?
Adducts and medially rotates thigh at the hip joint
What is the origin of the adductor Brevis?
External surface of body of pubis and inferior pubic ramus
What is the insertion of the adductor Brevis?
Posterior surface of proximal femur and upper one-third of linea aspera
What is the innervation of the adductor Brevis?
Obturator Nerve (L2, L3)
What is the function of the adductor Brevis?
Adducts and medially rotates thigh at the hip joint
What is the origin of the adductor Magnus?
Adductor part- ischiopubic ramus
Hamstring part- ischial tuberosity
What is the insertion of the adductor Magnus?
Posterior surface of proximal femur, linea aspera, medial supracondylar line.
Adductor Tubercle and supracondylar line
What is the innervation of the adductor Magnus?
Obturator Nerve (L2, L3, L4), Sciatic Nerve (tibial division) (L4)
What is the function of the adductor Magnus?
Adducts and medially rotates thigh at the hip joint
What is the origin of the obturator Externus?
External surface of obturator membrane and adjacent bone
What is the insertion of the obturator Externus?
Trochanteric fossa
What is the innervation of the obturator Externus?
Obturator Nerve (posterior division) (L3, L4)
