Innominates Flashcards
What 3 bones does the innominate consist of?
ilium, pubis, ischium
What are the ring of joint?
2 sacroiliac joints
1 pubic symphysis
2 hip joints
What are the major anterior bony landmarks?
iliac crest, ASIS, AIIS, pubic symphysis
What are the major posterior bony landmarks?
PSIS, PIIS, ischial tuberosity
What is the development process of the innominate?
not fused at birth; acetabulum formed from 3 ossification center
What are the common ligaments that are painful due to overuse?
iliolumbar, posterior sacroiliac, sacrospinous, sacrotuberous
Which muscles inset superior?
quadratus lumborum, rectus abdominus
Which are hip flexor muscles?
iliopsoas, rectus femoris
Which are hip extensor muscles?
glut max, hamstrings
Which muscles are abductors?
glut med, glut min, TFL
What muscle is a hip external rotator?
piriformis
How does the pelvis relate to lymphatics, GI/GU?
lymphatic trunks from lower extremity
pelvic floor/diaphragm is important in regulation
How does pelvis have biomechanical influence?
foundation of trunk
maintain stability during movement
transmits force during gait
What does each finger represent in air hands?
thumbs = PSIS pointers = ASIS pinkies = pubic tubercles
Motion of anterior rotation
ASIS- inferior compared to contralateral
PSIS- superior
Ischial tuberosity- superior
Motion of posterior rotation
ASIS- superior
PSIS- inferior
Ischial tuberosity- inferior
Innominate rotation associated with right heel strike
right let swings forward
right innominate rotates posteriorly
right heel strikes the ground
Innominate rotation associated with right toe off
weight is loaded into right foot
trunk moves forward
right innominate rotates anteriorly
Primary motion of superior shear
ASIS- superior
PSIS- superior
Ischial tuberosity- superior
Primary movement of pubic shear
Pubic tubercle- superior or inferior
Primary motion of flare
can tip in (in flare) or tip out (out flare)
ASIS more medial or lateral compared to contralateral
What is the 1st step in assessment of innominates?
screen the innominates for SD then further diagnose
What is the 2nd step?
lateralization tests (compression or standing flexion)
What muscles should you check for in TART screening?
QL (sup shear) Erector spinae (sup shear) SI joint (sacral SD) Piriformis (sacral SD) Hamstrings (post rotation) Quads (anterior rotation) Adductors (pub shear)
What is the ASIS Compression test?
motion challenge of posterior medial compression of ASIS to asses the SI joint
What is the standing flexion test?
motion challenge = stability during flexion, assessing ability of SI joint to stabilize
PSIS will move more superior on dysfunctional side (carried by musculature)
What is the 3rd step?
Palpate landmarks
What landmarks do you compare?
iliac crest ASIS PSIS pubic tubercles ischial tuberosity medial malleoli
What is the 4th step?
diagnose somatic dysfunction
