Lumbopelvic Flashcards
(44 cards)
line of gravity
- mastoid
- anterior to S2
- posterior to hip joint
- anterior to knee and ankle
lumbar vertebrae facet joint orientation
sagittal plane to permit flexion/ extension
lumbar vertebrae osteology
5
spinous process extend posteriorly
sacral vertebrae osteology
5
spinous process extend posteriorly
sacral transverse process and facet joint orientation
none
Ferguson’s angle
angle between the horizontal plane and superior surface of the base of the sacrm
What does an increase in ferguson angle result in?
increase in the anterior shear force (due to body weight)
spondylosis
age-related degenerative changes that occur in the spine
spondylolysis
defect of portion of vertebrae between superior and inferior articular process (pars interarticularis)
spondylolisthesis
anterior slippage of one vertebral body on another
protrusion
displaced NP within AF, may put pressure on SC
prolapse
displaced NP on posterior edge of disc but within AF
Extrusion
AF rupture,NP escapes to epidural space
Sequestration
NP and fragments of AF become lodges within epidural space
Flexion Arthrokinematics
superior and anterior sliding of the inferior facet on the superior facet
Extension Arthrokinematics
inferior and posterior sliding of the inferior facet on the superior facet
Lateral Flexion Arthrokinematics
ipsilateral: inferior slide
contralateral side: superior slide
Rotation Arthrokinematics
ipsilateral: facet separation
Contralateral: facet approximation
side bending and rotation of facet occurs in opposite directions when….
performed from neutral position
side bending and rotation of facet occurs in the same direction when…
performed from flexed or extended position
Lumbopelvic rhythm
coordination of movement between lumbar spine and hip to complete sagittal flexion and extension in standing w/ knees locked
Lumbopelvic rhythm - flexion
lumbar flexion 40-70 degrees
anterior pelvic rotation
hip flexion - 70 degrees
Lumbopelvic rhythm - extension
initially driven by hip extension, posterior pelvic rotation and lumbar spine extension
What motions should be noted during lumbar sagital motion
out of phase movement
aberrant movement
reversal of lumbopelvic rhythm