Non-Systems: Therapeutic Modalities: Mechanical Spinal Traction: Effects

Question 1

Traction

Answer 1

• A distraction force applied to the spine to separate articular surfaces between vertebral bodies and elongate spinal structures

Question 2

Effects of Traction

Answer 2

• A separation of the facet joints with sufficient force
• Opens intervertebral foramen
• Relieves pressure on nerve root and decreases compressive forces on the facets

Question 3

Effects of Traction: Lumbar Force Required

Answer 3

• 50% of patients body weight

Question 4

Effects of Traction: Cervical Force Required

Answer 4

• 7% of patients body weight

Question 5

Reduction of Disc Protrusion

Answer 5

• Separation of vertebrae causes a suction force that moves discs back centrally.

Question 6

Reduction of Disc Protrusion: Lumbar Spine

Answer 6

• 60-120lbs of force

Question 7

Reduction of Disc Protrusion: Cervical Spine

Answer 7

• 12-15lbs of force

Question 8

Tissue Stretch

Answer 8

• Soft tissue can be stretched via traction without separation of the joints.
• Lower forces are used to achieve this

Question 9

Tissue Stretch: Lumbar

Answer 9

• 25% body weight

Question 10

Tissue Stretch: Cervical

Answer 10

• 12-15lbs

Question 11

Muscle Relaxation

Answer 11

• Can interrupt the pain muscle spasm cycle via either
• Intermittent traction causing stimulation of mechanoreceptors
• Static traction causing inhibition of motor neuron firing

Question 12

Muscle Relaxation: Parameters

Answer 12

• Lumbar: 25% body weight

- Cervical: 12-15lbs

Question 13

Joint Mobilizations

Answer 13

• Mechanical traction can produce a generalized joint mobilization to the area being distracted