Intermittent Lumbar Traction - Contraindications in Physiotherapy

Absolute Contraindications

Red Flag / Serious Pathology

• Spinal malignancy - primary or metastatic tumor in the area to be treated; distraction forces can accelerate vertebral destruction or spread
• Spinal infection (osteomyelitis, discitis, tuberculosis) - traction can disseminate infection and worsen structural compromise
• Structural disease secondary to tumor or infection (any movement-contraindicated condition)

Neurological Emergencies

• Cauda equina syndrome - bilateral leg neurological symptoms, saddle (groin/perineal) anaesthesia, or bowel/bladder dysfunction are absolute stop signs; these require urgent surgical decompression, not traction
• Bilateral lower limb paraesthesia or numbness - indicates severe cord/cauda equina compromise

Spinal Structural Instability

• Spinal instability / joint instability - fractured vertebrae, ligamentous laxity, or spondylolisthesis with instability; traction can cause further displacement
• Untreated fractures / acute trauma with possible fracture to the lumbar region
• Atlantoaxial instability (if treating the full spine)

Vascular

• Vascular compromise (aortic aneurysm, significant vascular disease in the region) - the mechanical forces could rupture or compromise vessel walls

Pregnancy

• Pregnancy - the harness positioning, compression on the pelvis/abdomen, and distraction forces are unsafe

Relative Contraindications / Precautions

Inflammatory Arthropathies

• Rheumatoid arthritis (RA) - ligamentous laxity and atlantoaxial instability risk
• Ankylosing spondylitis (AS) - brittle, fused spine prone to fracture under distraction
• Psoriatic arthritis - similar considerations to RA/AS

Bone Quality

• Osteoporosis - reduced bone density raises the risk of vertebral compression fracture under traction load; use only with very low forces if at all
• Long-term corticosteroid use - causes secondary osteoporosis with the same fracture risk

Gastrointestinal / Abdominal

• Hiatus hernia - the chest/pelvic harness compression increases intra-abdominal pressure, potentially worsening reflux or hiatus hernia symptoms
• Abdominal problems (e.g., recent abdominal surgery, large hernia) - harness compression is poorly tolerated

Cardiovascular / Respiratory

• Severe heart failure - positional demands and the physical stress of traction are poorly tolerated
• Respiratory problems - the chest harness can restrict breathing, particularly in patients with COPD or asthma

Neurological / Medical

• Epilepsy - risk of a seizure during unguarded traction
• Recent stroke or TIA - neurological instability makes traction inadvisable
• Anticoagulant therapy / bleeding disorders - any microtrauma risk is amplified

Post-surgical

• Previous spinal surgery - hardware, altered biomechanics, or scar tissue can make traction unpredictable; requires individual assessment

Psychological / Practical

• Claustrophobia or severe anxiety - patient must be able to tolerate being harnessed and lying still; inability to comply is a safety issue
• Sensory disturbances (impaired sensation) - patient cannot give reliable feedback if traction becomes harmful
• Strong autonomic dysfunction - unpredictable cardiovascular responses
• Influence of drugs or alcohol - impaired capacity to report adverse responses
• Skin conditions / open wounds where the harness would be applied

Red Flag Signs That Should Stop a Session Immediately

Clinical Guideline Note (APTA / JOSPT 2021)

• There is conflicting evidence for intermittent lumbar traction in general LBP
• There is preliminary evidence that a subgroup with nerve root compression, peripheralization of symptoms, or a positive crossed straight leg raise may benefit from intermittent lumbar traction in prone
• There is moderate evidence against using lumbar traction for acute/subacute nonradicular LBP or chronic LBP

Summary Table

Indications for Intermittent Lumbar Traction

Primary / Best-Evidence Indications

1. Lumbar Disc Herniation with Radiculopathy

• L4/L5 or L5/S1 disc herniation with unilateral leg pain (sciatica)
• Dermatomal pain distribution following the nerve root pattern
• Motor or sensory deficits consistent with a single nerve root level
• Positive straight leg raise (SLR) or crossed SLR test
• Peripheralization of symptoms - the APTA guideline specifically notes that patients with nerve root compression and peripheralization, or a positive crossed SLR, form the subgroup most likely to benefit from intermittent lumbar traction in prone

2. Lumbar Radiculopathy (Nerve Root Compression)

• Symptoms include shooting pain, paraesthesia, or numbness down one leg
• Neurodynamic tests are positive
• Symptoms are not improving with other conservative treatment after 4-6 weeks

Secondary / Accepted Indications

3. Discogenic Low Back Pain

• Disc bulge / protrusion without frank herniation
• Centralization of pain in response to traction (McKenzie principle)
• Pain aggravated by sustained loading positions and relieved by unloading

4. Degenerative Disc Disease (DDD)

• Loss of disc height causing narrowed intervertebral foramina
• Chronic axial low back pain with a mechanical pattern
• Foraminal stenosis at a single level

5. Facet Joint Syndrome / Posterior Facet Problems

• Pain from posterior element compression
• Traction opens the facet joint space and reduces compressive load
• Useful in acute facet joint irritation where direct joint mobilization is not tolerated

6. Lumbar Spondylosis / Degenerative Joint Disease

• Arthritic changes at the lumbar facets or disc-vertebral joints
• Associated with stiffness and hypomobility
• Traction helps separate compressed articular surfaces

7. Hypomobility / Lumbar Stiffness

• Restricted range of motion from joint or soft tissue causes
• Subacute presentations where mobilization via traction is better tolerated than manual therapy

8. Muscle Spasm

• Severe lumbar paraspinal muscle spasm protecting the spine
• Intermittent traction promotes the cyclical contraction-relaxation cycle, improving blood flow and breaking the pain-spasm-pain cycle

Condition-Specific Indications List (Zimmer/Clinical Practice)

Mechanisms Explaining Why Traction Works

1. Disc decompression - reduces intradiscal pressure, allowing fluid rehydration and nuclear repositioning
2. Foraminal widening - separation of vertebral bodies increases the diameter of the intervertebral foramen, decompressing the exiting nerve root
3. Facet joint distraction - reduces compressive load on inflamed posterior elements
4. Muscle relaxation - intermittent on-off cycle promotes paraspinal muscle fatigue and reflex relaxation
5. Pain gate mechanism - sensory stimulation from stretch may activate the gate control system
6. Improved circulation - cyclical loading/unloading increases local blood flow and nutrient supply to avascular disc tissue
7. Psychological effect - supervised, passive treatment can reduce pain catastrophizing and anxiety

Optimal Patient Profile (APTA Clinical Practice Guideline - 2021)

• Signs and symptoms of nerve root compression
• Peripheralization of symptoms (pain spreading distally with certain movements)
• Positive crossed straight leg raise test
• Treatment applied in the prone position

Important Clinical Context

• Exercise therapy
• Manual therapy
• Electrotherapy (interferential current, TENS)
• Kinesio taping

Absolute vs. Relative Contraindications

Absolute Contraindication

• No exceptions
• Proceeding would be considered clinical negligence
• The risk-benefit ratio is always unfavorable

Relative Contraindication

• The potential benefit outweighs the risk
• There is no safer alternative
• The clinician applies additional precautions or modifies technique
• The patient gives informed consent understanding the risk
• Context-dependent - requires clinical judgment
• Proceeding is sometimes appropriate
• Risk can often be mitigated by modifying the treatment (e.g., reduced force, shorter duration, closer monitoring)

Side-by-Side Comparison

A Practical Way to Remember It

Absolute = "Never do it, no matter what." Relative = "Think carefully before you do it."

Applied to Lumbar Traction

Therapeutic Ultrasound - Contraindications

Absolute Contraindications

Malignancy

• Active cancer / malignant tumours over or near the treatment area
• Ultrasound increases cellular metabolism and local blood flow, which can accelerate tumour growth and promote metastasis
• Applies to both primary tumours and metastatic lesions

Pregnancy

• Over the abdomen, pelvis, uterus, or lower back in pregnant women
• Thermal and cavitation effects carry unverified but serious risk to fetal development
• The developing fetus is highly sensitive to thermal stress

Pacemakers / Implanted Electronic Devices

• Over the thorax or near the device in patients with pacemakers or implanted cardiac devices
• Ultrasound can interfere with the electrical circuitry of the device, causing malfunction or failure

Sensitive Anatomical Areas (always avoid regardless of indication)

• Eyes - risk of retinal damage and lens overheating
• Reproductive organs / gonads / testes / ovaries - risk of thermal damage to gametes
• Anterior neck / carotid sinus - can trigger reflex bradycardia or blood pressure changes
• Exposed neural tissue / laminectomy sites - direct ultrasound on exposed cord or nerves

Thrombosis / Thromboembolic Disease

• Deep vein thrombosis (DVT) or thrombophlebitis - thermal and cavitation effects can dislodge a thrombus, causing pulmonary embolism
• Hemorrhagic conditions - risk of worsening bleeding due to increased tissue perfusion

Spinal Cord / Neurological

• Directly over the spinal cord (especially post-laminectomy where bony protection is absent)

Relative Contraindications / Precautions

Bone & Growth

• Active epiphysis (growth plates) in children - thermal effects may disrupt bone growth; avoid direct application over open growth plates
• Healing fractures - while low-intensity pulsed ultrasound (LIPUS) is actually used therapeutically for fractures under controlled conditions, standard clinical ultrasound should be used with caution
• Osteoporosis - fragile bone may respond unpredictably to thermal effects

Implants & Hardware

• Metal implants / joint replacements in the treatment area - metal conducts heat and can cause localised overheating of surrounding tissue; traditionally listed as a contraindication, though modern evidence suggests metal implants do not heat to dangerous levels; use with reduced intensity and monitor carefully
• Other implanted devices (drug delivery pumps, nerve stimulators)

Skin & Tissue Integrity

• Open wounds - avoid direct application; however, ultrasound through water immersion or hydrogel for wound healing is a specific accepted technique
• Skin infections - risk of spreading infection via the transducer or thermal stimulation
• Radiotherapy sites - recently irradiated tissue has compromised vasculature; avoid for at least 6 months post-radiation

Circulation & Sensation

• Impaired circulation / ischemic tissue - cells cannot dissipate heat, increasing burn risk
• Impaired sensation - patient cannot report heat or pain during treatment; use only pulsed mode at low intensity with constant monitoring
• Vascular disease - inadequate blood flow cannot buffer thermal load

Neurological / Cognitive

• Impaired cognition or communication - patient cannot report discomfort; proceed with caution and use pulsed, lower intensity settings
• Regenerating peripheral nerves - acute nerve repair tissue is sensitive to thermal stimulation

Other

• Acute inflammation - thermal ultrasound (continuous mode) is contraindicated; pulsed/non-thermal mode may still be used as it reduces inflammation without adding heat
• Infection / sepsis in the region - risk of spreading infection
• Epilepsy - avoid over the head
• Haemophilia or bleeding disorders - cavitation effects can cause microhaemorrhage

Summary Table

Key Practical Rule: Continuous vs. Pulsed Mode