Pelvis Flashcards
Form closure
structural anatomy of the wedge shaped sacrum
+ shape of internal SI joint= increased stability
creates the keystone of an arch
Force closure
tensile forces that pull on the pelvis to increase stability and mobility
Physiological motions
rotation ( ant and posterior)
flaring (lateral and medial )
Non-physiologic motion
shearing (superior and inferior)
standing flexion test
gives the laterality of the SD
Positive test on the right = right innominate somatic dysfunction
Anterior Rotation:
occurs about the inferior transverse axis of the sacrum
ASIS goes anterior inferior
PSIS goes posterior superior
extension of the hip
Posterior rotation
occurs about the inferior transverse axis of the sacrum
PSISgoes anterior inferior
ASIS goes posterior superior
Flexion of the hip
dx of ant rotation
(+) Standing Flex test- ipsilateral
ASIS inferior (caudad)
PSIS superior (cephalad)
Inferior pubes - ipsilateral
Tight quads, leg length discrepancy
TX= ME
dx of post rotation
(+) Standing Flex test-ipsilateral
ASIS superior (cephalad)
PSIS inferior (caudad)
Superior pubes-ipsilateral
inguinal/groin pain (due to rectus femoris dysfunction)
Medial knee pain (due to sartorius dysfunction)
tx= ME
Flare
changes in rotation that occur over a vertical axis
Medial flare
(+) Standing Flex test- ipsilateral
ASIS medial
PSIS lateral
lateral flare
ASIS lateral
PSIS medial
(+) Standing Flex test- ipsilateral
dx superior pelvic shear
Standing flexion test: positive right ASIS: level PSIS: level Pubic tubercle: Superior right RIGHT SUPERIOR PUBIC SHEAR
dx inferior pelvic shear
Standing flexion test: positive right ASIS: level PSIS: level Pubic tubercle: Inferior right RIGHT INFERIOR PUBIC SHEAR
dx for compressive shear
(+) Standing Flex test-ipsilateral
ASIS and PSIS level
Ipsilateral pubic tubercle level, but very tender