Flashcards in Lumbar Spine/Core Deck (102)
Which muscles are tight in the lower cross syndrome?
Erector spinae and iliopsoas
Which muscles are weak in the lower cross syndrome?
Abdominal muscles, gluteus maximus
What is the neutral zone in reference to the spine?
Region of laxity around the neutral resting position of a spinal segment (between flexion and extension, for example)
According to Panjabi, how can neutral zone impairment lead to pain and disability?
Decrease in the capacity of the stabilizing system of the spine to maintain the intervertebral neutral zones within physiological limits
How does high-speed trauma affect a spinal segment's neutral zone?
Biomechanically speaking, what is the most stable position for stress on the spine to be placed?
Within neutral zone
What things make up the passive system that influences the neutral zone?
Vertebrae, IVD, zygaphophyseal joints, ligaments
What things make up the active system that influences the neutral zone?
Muscles and tendons
What things make up the neural system that influences the neutral zone?
Central and peripheral nervous systems
What 3 large body concepts make up the overall stability of the spine?
Nervous system, spinal column, muscles
What muscles make up the core stabilizers?
Transversus abdominis, pelvic floor, diaphragm, multifidis
Which involves larger, torque-producing muscles that are anatomically more superficial: global system or local system of muscles?
Global: control spinal orientation and balance of external loads
Which involves anatomically deeper muscles that provide stability through increasing spinal segmental stiffness: global system or local system of muscles?
Local: play a role in anticipation of motion
When are the core stabilizers at work?
When do the core stabilizers increase their action?
BEFORE any further loading or motion
Which pelvic tilt is utilized to find the neutral zone by drawing the belly up toward the rings and toward the floor while flattening the low back against the floor?
Posterior pelvic tilt
Which pelvic tilt is utilized to find the neutral zone by pushing the tail bone down and arching the low back up from the floor?
Anterior pelvic tilt
About how many muscle attachments make up the core area?
Which core muscles form the "core container"?
Pelvic floor, diaphragm, transversus abdomens
What additional muscles to the core function to stiffen the spine and stabilize the core?
Iliocostalis, longissimus, multifidi, rotators, intertransversarii (also ligaments and fascia, technically)
What are the extensors of the thoracolumbar spine?
Longissimus, iliocostalis, and multifidis
What is the thoracic portion of the erector spinae muscles that are extensors of the thoracolumbar spine?
Longissimus thoracis pars thoracics
Longissimus lumborum pars thoracis
What is the lumbar portion of the erector spinae muscles that are extensors of the thoracolumbar spine?
Longissimus thoracis pars lumborum
Longissimus lumborum pars lumborum
What is the origin of the pars thoracis?
Posterior sacrum and medial iliac crest
To where do the pars thoracis attach?
Ribs and vertebral components (run parallel to spine)
Is the pars thoracics mostly slow or fast twitch fibers?
Slow (type 1) (75%)
Is the pars thoracis a global/superficial muscle or local/deep?
What is the function of the pars thoracics?
Produce greatest amount of lumbar extension with minimal compression of the spine
What is the origin of the pars lumborum?
Posterior sacrum and medial aspect of iliac crest