Lumbar, Sacral, Coccygeal Spine and Sacroiliac Joints Flashcards
L1-4 are
typical
L5 is _____ and takes on shape of ______
atpyical
sacrum
Lumbar spinius processes are
broad and horizontal
- Transverse processes are
long and horizontal
Mamillary and accessory processes serve as attachment sites for
multifidus and intertransverse muscles
Lumbar Lordosis healthy adult in standing
40-50
Lumbar Flexion/Extension
45-55
15-25
Lumbar Axial Rotation
Lateral flexion
5-7
20 deg
Superior Facets face _____ and are ______
medially, posteriorly, and are concave
Inferior facets face _____ and are ______
laterally, anteriorly, and are convex
Mobility is greatest in
sagittal plane
Mobility limited in
rotation
lateral flexion
More rotation & lateral flexion in _______ decreases in _________
upper L spine
Lower L spine
almost no lateral flexion at
L5
Rotation and lateral flexion coupled
contralaterally
What structres limit flexion
Facet joint capsules
Interspinous ligament
Supraspinous ligament
Posterior Longitudinal Ligament
Ligamentum Flavum
Flexion End Feel
Firm (tissue stretch)
What structures limit Lumbar Extension
anterior longitudinal ligament
Extension End Feel
bony
In extension, ______ and _______ are stretched
hip flexors, ligaments
What structures limit lateral flexion
intertransverse ligament
Lateral flexion end feel
firm, tissue stretch
In lateral flexion, Ipsilateral facet joint capsule can
be tight which limits motion
Lateral flexion, ipsilateral facets _______ and contralateral facets ______
approximate
distract
What structures limit rotation
facet joint capsules
interspinous ligament
intertrasnverse ligament
Rotation end feel
bony
In rotation, Ipsilateral facets ______ and contralateral facets ________
distract, approximate
inferior articular process facets
Flexion slides
anteriorly and superiorly
inferior articular process facets
Extension slides
posteriorly and inferiorly
inferior articular process facets
lateral flexion Ipsilateral ________ and contralateral __________
inferior sliding (approximation), superior sliding (separation)
inferior articular process facets
Rotation: ipsilateral ___________, contralateral __________
separation (distraction) of facets, approximation (compression) of facets
if youre hypomobile on right facet and flex the spine you will
laterally flex to the right (ipsilateral)
If youre Hypermobile on right facet and you flex the spine you will
laterally flex to the left (contralateral)
Hyper/Hypomobility can cause
pain and aberrant motions
Lumbopelvic Rhythm
Hip joints and lumbar spine provide the
central flexion and extension pivot point for the human body as a whole
Lumbopelvic Rhythm
Kinematic relationship during sagittal plane movements of the body is known as
lumbopelvic rhythm
Lumbopelvic Rhythm
Requires 50% of total _______ and 90% of total ______
Hip flexion
lumbar spine flexion