Low Back Flashcards
how to force a posterior pelvic tilt
draw belly button up toward ribs and toward the floor
flatten low back against the floor
how do you force anterior pelvic tilt?
push tail bone down
arching low back up from floor
how do you get pelvic neutral?
pain free position between the anterior and posteiror
neutral zone
region of laxity around the neutral resting postiion of a spinal segment
what is a movement screen for lumbopelvic control?
hip hinge, squat, lunge
hip hinge
important to spare the back lifting rising from a chair keep the abomen tense keep the knees behind the toes spread toes out don't flex lumbar spine
the patient etends when hinging at the hips. What does this tell us?
stability and deceleration of movement is coming from the posterior chain
what are the pros for extending at the low back during a squat?
safer than flexion
protects discs from shear loads
what are the cons for extending at the low back during a squat?
muscular pain from overuse (extensors)
lower cross/anterior pelvic tilt
what is important to know about low back extensors?
extensors closest to the spine have mechanical advantage to produce greatest amount of lumbar etension with minimal compression of the spine
these muscles are 75% slow twitch fibers
slow twitch fibers
type I/slow oxidative fibers rich blood supply aerobic smaller fibers slower contraction endurance
extensors further from the spine are what types of fibers?
a mix of type 1 and 2
fast twitch fibers
type II/fast oxidative fibers high intensity contraction short contraction time quick fatigue anaerobic larger motor nerve than slow twitch
posterior sheer supports ____ produced from ____of the torso during hip ____. What is an example of this?
posterior sheer supports ANTERIOR sheer produced from FLEXION of the torso during hip FLEXION
example: typical lifting
lumbar flexion causes? What does this cause?
spinal compression
unable to resist sheer forces, leading to damage
