spinal traction Flashcards
what is spinal traction
mechanical agent that separates joints and elongates surrounding tissue (capsule, menisci, ligaments)
what are the 2 kinds of traction
manually - by clinician; usually cervical
mechanically - using machine, BW or gravity; usually lumbar
what are the effects of traction
distract joints
reduce disc protrusion
stretch soft tissue
relax muscle
mobilize joint
goal of traction
reduce pain
exp joint distraction
usually used to address compression of spinal nerve roots
separates 2 joints perpendicular to articulation
% of BW for inc length of lumbar spine
25%
% of BW for distraction of lumbar apophyseal or facet joints
50%
% of BW for distraction of cervical vertebrae
7%
exp reduction of spinal disc protrusion
distraction = suction effect by dec intradiscal pressure sucking displaced part back or from tension of PLL pushing any post displaced anteriorly
spinal disc reduction is only applicable to what degree
protrusion and prolapse
malabo na for extrusion and sequestration
weight to reduce lumbar disc protrusion
27-55 kg
weight to reduce cervical disc protrusion
7-13 kg
exp soft tissue stretching
inc length of soft tissues
exp muscle relaxation in intermittent traction
d/t to dec pain - breaks pain-spasm cycle
oscillitatory movements stimulates GCT
stim GTO to inhibit alpha motor neuron firing = dec spasm
exp muscle relaxation in static traction
prolonged traction = dec monosynaptic response = dec spasm and tension