mechanical force applied to the body in a way that separates jt surfaces and elongates surrounding tissue
traction
traction indications (5)
- disc herniation
- nerve impingement
- jt hypomoblie
- mm spasm
- subacute jt inflammation
What two bone conditions are considered contraindications for traction?
RA and OA
traction contraindications (3)
- acute injury
- hypermobile
- uncontrolled HTN (cervical)
traction precautions (3)
- medial disc hernia
- claustrophobia
- cough/sneezing
traction can distract vertebral bodies up to…
1-2mm
traction can ________ spinal curves
strengthen
traction effects on bone (2)
- increase density (Wolff’s law)
2. reverse immobilization
traction effects on ligaments (3)
- Ant, post, longitude, and Lig flav
- deformation greater w/ slow load
- stimulate proprioceptive NS
traction effects on discs (3)
- decrease pressure
- reduce protrusions
- decrease pain
traction effects on articular fascets (3)
- separation/gliding
- widens intervertebral foramen
- exchange synovial fluid
traction effects on mm (2)
- stretches
2. mm relaxation
traction effects on nerves (2)
- decrease pressure
2. return blood flow
cervical traction parameters
AO or AA joint:
other joints:
AO or AA joint: 0, 10lbs
other joints: 25-30, 20-50lbs
damage at 120lbs
lumbar traction parameters
half of pt’s weight. damage at 400lbs
for lumbar traction, higher angles decreases
lordosis
sustained lumbar traction duration
8-30 min
intermittent lumbar traction duration
3-10 sec on/off (1:3)x 20-30 min
cervical duration for herniated disc
8 min
cervical duration for other
10-30 min
