hip/thigh muscles Flashcards
Psoas Major (Flexors)
O: lumbar transverse processes, intervertebral discs and bodies from T12-L5
I: lesser trochanter of femur
N: anterior rami (L1,L2,L3)
F: hip flexion
Iliacus (Flexors)
O: iliac fossa
I: lesser trochanter of femur
N: femoral nerve (L2, L3)
F: hip flexion
Pectineus (ADDuctors)
O: Pectineal line of pelvis
I: lesser trochanter of femur
N: femoral nerve (L2,L3)
F: hip ADD and flexion
Adductor Longus (ADDuctors)
O: body of pubis
I: linea aspera of femur
N: Obturator nerve (L2-4)
F: hip ADD and int. rot.
Adductor Brevis (ADDuctors)
O: body of pubis and inferior pubic ramus
I: linea aspera of femur
N: Obturator nerve (L2,L3)
F: hip ADD and int. rot.
Adductor Magnus (ADDuctors)
Adductor Part: O: ischiopubic ramus I: Post. surface of proximal femur, linea aspera, medial supracondylar line N: Obturator nerve (L2-4) F: hip ADD and int rot
Hamstring Part:
O: ischial tuberosity
I: adductor tubercle & supracondylar line
N: Sciatic nerve (tibial division) (L2-4)
F: assists in hip extension & ADD
Gracilis (ADDuctors)
O: body of pubis, inferior pubic ramus, ramus of ischium
I: Pes Anserine of the tibia
N: Obturator nerve (L2,L3)
F: hip ADD, knee flexion
Sartorius (Flexors)
O: Ant. Sup. iliac spine
I: Pes Anserine of the tibia
N: Femoral nerve (L2, L3)
F: hip flexion & ext rot, knee flexion
Gluteus Maximus (ABDuctors)
O: Fascia of gluteus medius and erector spinae, dorsal surface of sacrum/ coccyx/ sacrotuberous ligament
I: IT band (Iliotibial tract) and gluteal tuberosity of femur
N: Inferior gluteal nerve (L5, S1, S2)
F: Extends, abducts, and ER hips; lateral stabilizer of hip and knee joint
Gluteus Medius (ABDuctors)
O: External surface of Ilium I: Greater Trochanter of femur N: Superior gluteal Nerve (L4, L5, S1) F: ABD hip, stabilizes pelvis over stance - Ant. fibers: IR of hip - Post. fibers: ER of hip
Gluteus Minimus (ABDuctors)
O: External surface of Ilium
I: Greater trochanter of femur
N: Superior gluteal nerve (L4, L5, S1)
F: ABD and IR of hip; stabilizes pelvis over stance
TFL (Tensor Fascia Latae) (ABDuctors)
O: Crest of Ilium
I: IT band (Iliotibial tract) of fascia latae
N: Superior Gluteal Nerve (L4, L5, S1)
F: hip flexion/ ABD/ IR; stabilizes knee in extension
Piriformis (short rotators)
O: Anterior surface of sacrum
I: greater trochanter of femur
N: branches from S1 & S2
F: hip ER with femur extended; hip ABD with flexed femur
Obturator Internus (short rotators)
O: Obturator Membrane
I: greater trochanter of femur
N: Nerve to obturator internus (L5, S1)
F: hip ER with extended femur; hip ABD with flexed femur
Pneumonic for remembering the order of ADDuctors from Superior to Inferior
Peanut (Pectinius) Butter (Adductor Brevis) Leaves (Adductor Longus) Me (Adductor Magnus) Greasy (Gracilis)
