Kines Exam 2: L/S (me)

peripheral nerves
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Terms in this set (53)
peripheral nerves
large vertebral foramen exit..
Image: peripheral nerves
compressive loads
large vertebral bodies support..
Image: compressive loads
larger anteriorly
L5 transitional vertebra are..
sagittal plane
orientation of facet joints are mostly in the..
flex/ext, LESS lat flex and rot
lumbar spine movement favors..
Image: flex/ext, LESS lat flex and rot
10% incr
how is the size of the intervertebral foramen affected by flexion
Image: 10% incr
10% decr
how is the size of the intervertebral foramen affected by extension?
Image: 10% decr
affects nerve root compression
what is the significance of flex/ext involving the size of the intervertebral foramen?
lat flex/rot in opp directions
coupled motion in ext or neutral create...
flex and rot
L2-L3 have the largest amount of..
toward, awaywhen lumbar spine bends (flex/lat flex) the IV disc is subject to compression on the side the bending is going ______ and the nucleus pulposus deforms on the side the bending is going _______ fromlat flex and contralat rotwhat is the most accepted rule for coupled motion in lordotic lumbar spine?deep erector spinae and multifidiwhich muscle(s) would most likely assist in stabilizing the spine in a person w/ a spondylolisthesis?anterior shear on L5-S1iliolumbar ligament prevents...superior glidewhat arthrokinematic motion occurs at the left L3 on L4 facet during fwd flex?incr ant shear forces on lumbar spinean incr in the lumbopelvic angle leads to..120 deghow many degrees are the layers of the annulus in the lumbar spine?flex of lumbar spine then ant rot of the pelviswhat is normal lumbopelvic motion during fwd flexion?hip strengthwhat is NOT associated in persons w/ LBP?outIV disc from hydrostatic pressure from external loads (i.e. muscle forces) force fluids..loss of fluidIV disc incr loading leads to..gain in fluid of IV discbeing in a recumbent position (i.e. leaning, resting, reclining) leads to..L5 and S1lumbosacral angle is between..incr in shearincr angle leads to incr in lordosis which leads to..greaterthe lumbosacral angle is about 30 deg, if its >45 deg sheer is ______ than compressionclose to axisdeep layer muscles (multifidi and rotatores) lie...compression (want these muscles to stabilize the spine)deep layer muscles (multifidi and rotatores) mainly do..trueT/F: Deep layer muscles have a posterior shearlongissimus and iliocostaliswhat are the superficial erector spinae muscles?prime moverslongissimus and iliocostalis are the ________ _______ for the superficial layersfarther away from axis of rotlongissimus and iliocostalis lie...false, longT/F: longissimus and iliocostalis have short lever armsstabilizing corsetthoracolumbar fascia can be known as the...transversus abdominiswhat tightens the thoracolumbar fascia and controls the SIJ?cross brace/tension of the thoracolumbar fasciaglute max and contralat lats produce..rectus abdominus, ext/int obliques, transversus abdominusanterior hoop is made up of what muscles?false, it isT/F: hip neuromuscular control and muscular endurance appears to not be associated and/or predictive of LBPant pelvic tiltL/S flexion leads to..post pelvic tiltL/S extension leads to..80there is compression on ____% of interbody jts20there is compression on ____% of facetsshear (ant)what force is limited by the facets?individual segmentsmultifidi act on..false, strongT/F: iliolumbar ligament is weakipsilat, contralatquadratus lumborum has _______ flexion and ________ eccentric controlflexiliolumbar ligament is loaded in..during fwd flexwhen are there forces acting on the lumbar spine?post ligaments, muscles, and discwhere is the tension during lumbar spine loading?ant discwhere is the compression during lumbar spine loading?upper vertebral bodywhere is the ant shear during lumbar spine loading?true (dont needs a lot of muscle force to get adequate stability)T/F: Endurance is more important than strength1. Co-contraction of flexors/extensors 2. Incr intra-abdominal pressure (IAP) 3. "Sufficient stability" (too much stability imposes a jt compresssion penalty)what are the 3 mechanisms to incr stability of the lumbar spine?by extension movement or creating a stiff structure around the spine (i.e. external support)how can intra-abdominal pressure be created?