LE and Tunk OINAs Flashcards
External Oblique
O: Ribs 5-12
I: Anterior half of outer lip of iliac crest
N: T7-T12
A: Flexion of trunk (bilateral action); Rotation of trunk to opposite side; Ipsilateral Lateral bending of trunk; Tilts pelvis posteriorly
Internal Oblique
O: Anterior 2/3 of intermediate line of iliac crest
I: Ribs 9-12; cartilage of ribs 7-9; Pubis (crest and pecten pubis)
N: T7-T12, L1
A: Flexion of trunk (bilateral action); Rotation of trunk to same side; ipsilateral lateral bending of trunk
Transverse Abdominis
O: Iliac crest (anterior 2/3 of inner lip); Ribs 7-12
I: Pubis (crest and pecten pubis); linea alba
N: T7-T12, L1
A: Constricts abdomen; forced expiration
Rectus Abdominis
O: Lateral: pubis (tubercle on crest and pecten pubis); Medial: ligaments of symphyisis pubis
I: Ribs 5-7; sternum (xiphoid process)
N: T7-T12 ventral rami
A: Flexion of spine; posterior tilt
Psoas Major
O: TP of L1-L5; vertebral bodies and IV discs T12-L5
I: Lesser Trochanter of Femur
N: Lumbar Plexus L2-L4
A: Hip flexion (origin fixed); Trunk flexion (insertion fixed as in sit up); with insertion fixed, tightness contributes to increase lordosis
Psoas Minor
O: T12-L1 vertebral bodies and IV discs
I: Pecten Pubis; Ilium; Iliac Fascia
N: L1
A: Flexion of trunk and lumbar spine
Iliacus
O: Superior 2/3 iliac fossa; inner lip iliac crest; lateral sacrum
I: lesser trochanter of Femur
N: Femoral Nerve
A: Hip flexion; flexes pelvis on femur
Pectineus
O: Pecten Pubis
I: Femur (line from lesser trochanter to linea aspera)
N: Femoral Nerve, Obturator Nerve
A: Hip adduction
Gracilis
O: Inferior Ramus of Pubis; Ischial ramus
I: Medial surface of Tibia below tibial condyle (Pes Anserine)
N: Obturator Nerve
A: Hip adduction; knee flexion; medial rotation of knee
Adductor Longus
O: Pubis
I: Femur (middle 1/3 of medial lip of linea aspera)
N: Obturator Nerve
A: Hip adduction;
Adductor Brevis
O: Inferior ramus and body of Pubis
I: Femur (line from the lesser trochanter to proximal 1/3 of medial lip of linea aspera)
N: Obturator Nerve
A: Hip adduction; hip flexion
Adductor Magnus
O: Inferior ramus of pubis; ischium (inferior ramus, ischial tuberosity)
I: Femur (linea aspera, medial supracondylar line, adductor tubercle)
N: Obturator Nerve; Sciatic Nerve
A: Hip adduction; Role in hip rotation depends on thigh position
Gluteus Maximus
O: Ilium (posterior gluteal line and crest); Sacrum (dorsal surface); Coccyx (lateral surface)
I: IT band; Gluteal tuberosity of femur
N: Inferior Gluteal Nerve
A: Hip extension; Hip ER
Gluteus Medius
O: Ilium (outer surface between iliac crest and posterior gluteal line);
I: Greater trochanter of femur (oblique ridge on lateral surface)
N: Superior gluteal nerve
A: Hip abduction; Hip ER (posterior fibers); Hip IR (anterior fibers)
Gluteus Minimus
O: Ilium (between anterior and inferior gluteal lines)
I: Greater trochanter of femur (anterior surface); capsule of hip joint
N: Superior gluteal nerve
A: Hip abduction; Hip IR
Tensor Fascia Lata
O: Ilium (iliac crest); ASIS
I: IT band
N: Superior Gluteal Nerve
A: Hip flexion; Hip IR; Hip abduction
Piriformis
O: Sacrum; Ilium (gluteal surface near PIIS); SI joint capsule
I: Greater trochanter of femur ( superior border of medial aspect)
N: Nerve to piriformis
A: Hip ER
Obturator Internus
O: Pelvis (around obturator foramen); ischium (ramus); Pubis (inferior ramus);
I: Greater trochanter of femur (medial surface proximal to trochanteric fossa)
N: Nerve to obturator internus
A: Hip ER
Obturator Externus
O: Pubic ramus; ischial ramus; obturator foramen
I: Trochanteric fossa of femur
N: Obturator Nerve
A: Hip ER
Gemellus Superior
O: Ischial spine
I: Greater trochanter of femur
N: Nerve to obturator internus
A: Hip ER
Gemellus Inferior
O: Ischial Tuberosity
I: Greater Trochanter of femur
N: Nerve to quadratus femoris
A: Hip ER
Quadratus Femoris
O: Ischial tuberosity upper border
I: Quadrate tubercle on femur
N: Nerve to quadratus femoris
A: Hip ER