Lower Limb Revision Flashcards
Iliacus Action
Flex thigh at hip (trunk fixed)
Flex trunk at hip (thigh fixed)
Iliacus Origin
Iliac crest and fossa
Superolateral region of the sacrum
anterior sacroiliac and iliolumbar ligaments
Iliacus Insertion
Lesser trochanter and nearby shaft of femur
Iliacus Innervation
Femoral Nerve
Psaos Major Action
Same as iliacus
Psoas Major Origin
Bodies and intervertebral discs of vertebrae T12-L5
Transverse processes of lumbar vertebrae
Psoas Major Insertion
Lesser trochanter and nearby shaft of femur
Psoas Major Innervation
Anterior rami of lumbar spinal nerves
TFL Action
Extends knee
Laterally rotates tibia
Aids in abduction and medial rotation of the femur
during standing - steadies pelvis on femoral head and steadies femoral condyles on tibia
TFL Origin
Iliac crest
anterior superior spine
deep surface of facia lata
TFL Insertion
Lateral condyle of tibia via iliotibial band
TFL Innervation
Inferior gluteal nerve
Gluteus Maximus Action
Extends thigh at hip abducts thigh elevates trunk after stooping prevents trunk from pitching forward during walking anf running helps stabilise femur on tibia
Glute Max Origin
Posterior gluteal line of ilium, on posterior surface from iliac crest to posterior superior spine
coccyx
posterior surface of lower sacrum
aponeurosis of erector spinae
Glute Max Insertion
Gluteal tuberosity of femur
lateral condyle of tibia via iliotibial band
Glute Max Innervation
Inferior gluteal nerve
Glute Med and Min Action
abduct and medially rotate thigh
Glute Med and Min Origin
Most of the lateral surface of ilium between crest and acetabulum
Glute Med and Min Insertion
Greater Trochanter of femur
Glute Med and Min Innervation
Superior Gluteal nerve
Gemellus Superior Action
Laterally rotate thigh
abducts flexed thigh
SOmetimes absent
Gemellus Superior Origin
Ischial spine
Gemellus Superior Insertion
Greater trochanter of femur
Gemellus Superior Innervation
Nerve to obturator internus
Gemellus Inferior Action
Same as GS
Gemellus Inferior Origin
Ischial Tuberosity
Gemellus Inferior Insertion
Greater trochanter of femur
Gemellus Inferior Innervation
Nerve to Quadratus femoris
Obturator Externus Action
Thought to laterally rotate thigh in climbing
Obturator Externus Origin
External surface of obturator membrane
rami of pubis and ishium
Obturator Externus Insertion
Femur between head and greater trochanter
Obturator Externus Innervation
Obturator Nerve
Obturator Internus Action
thought to laterally rotate extended thigh and abduct flexed thigh
Obturator Internus Origin
Ramus of ishium
inferior ramus of pubis
anteromedial surface of lesser pelvis
Piriformis Action
Laterally rotate extended thigh
abducts flexed thigh
Piriformis Origin
Anterior surface of sacrum
gluteal surface of ilium
capsule of sacroiliac joint
Piriformis Insertion
Greater trochanter of femur
Piriformis Innervation
Spinal nerves L5-S2
Quadratus Femoris Action
Laterally rotate thigh
Quadratus Femoris Origin
Ischial Tuberosity
Quadratus Femoris Insertion
Intertrochanteric crest of femur
Quadratus Femoris Innervation
Nerve to quadratus femoris
Adductor Brevis Action
Adducts thigh
Adductor Brevis Origin
Body and inferior ramus of pubis
Adductor Brevis Insertion
Linea aspera and spiral line of femur
Adductor Brevis Innervation
Obturator Nerve
Adductor Longus Action
adducts and medially rotates thigh
flexes thigh at hip
Adductor Longus Origin
body and inferior ramus of pubis
Adductor Longus Insertion
Linea Aspera of femur
Adductor Longus Innervation
Obturator Nerve
Adductor Magnus Action
Adducts and medially rotates thigh
extends thigh at hip
Adductor Magnus Origin
Inferior ramus of pubis
ramus tuberosity of ischium
Adductor Magnus Insertion
Linea aspera
gluteal tuberosity
medial supracondylar line of femur
Adductor Magnus Innervation
Obturator nerve
tibial nerve
Gracilis Action
Flexes and medially rotates tibia at knee
Gracilis Origin
body and inferior ramus of pubis
ramus of ischium
Gracilis Insertion
Medial surface of tibia just below condyle
Gracilis innervation
Obturator nerve
Pectineus Action
flexes and adducts thigh