Facet Joints
What motion(s) do the lumbar facet joint facilitate the most of?
flexion/extension
Which is the largest intervertebral disc in the spine
lumbar
What is the ALL taut in?
extension
Name a spinal extensor
erector spinae, multifidus, QL
How many lumbar vertebrae are there
5
What is the articulation of the facet joints?
inferior facet of the superior vertebrae to the superior facet on the inferior vertebrae
What is the name of the inner portion of the disc
nucleus fibrosis
What is the role of the PLL?
taut in flexion
Is the transverse abdominus in the inner or outer unit?
inner unit
Which part of the vertebrae is a weight bearing structure
vertebral body
What happens to space between the joints in flexion
space increases
Which portion of the disc may when injured may cause you to feel pain
outer 1/3 of the annulus
Which ligament is taut in lateral flexion and rotation?
intertransverse
L2 myotome
hip flexion
L4 Dermatome
medial malleolus
What direction does the inferior articular process slide on the superior articular process during lumbar extension
inferior
What is the annulus fibrosis made of?
concentric laminae
interspinous
L5 myotome
big toe extension
Describe a Type I muscle fiber
slow to fatigue, slow oxidative, small motor units, postural/stability muscles
What happens to the ipsilateral and contralateral facets during rotation?
ipsilateral facet distraction, contralateral facet compression
What is a disc extrusion?
nucleus pushes through the annulus and pushes on a nerve root
Resists separation of the lamina in flexion
Which muscle is a deep spinal stabilizer that assists hydraulic amplification system?
multifidus
Give an external cue for contracting the TA?
punch in the stomach, string to the ceiling