Thoracic Disc Herniation

Spine

Overview

Thoracic disc herniation involves protrusion of intervertebral disc material into the spinal canal, potentially compressing the spinal cord or nerve roots in the thoracic spine. While less common than cervical or lumbar herniation due to the thoracic spine's anatomical stability and limited mobility, it can cause significant myelopathic symptoms and functional impairment. Clinical presentation ranges from asymptomatic imaging findings to severe neurological compromise depending on herniation size, direction, and degree of canal compromise.

Pathophysiology

Thoracic disc herniation usually occurs on a background of disc degeneration. The nucleus pulposus protrudes through disruptions in the annulus fibrosus, often directed posteriorly or posterolaterally due to the natural orientation of thoracic discs. Central herniations risk cord compression and myelopathy, while lateral or foraminal herniations compress ipsilateral nerve roots. The relatively narrow thoracic spinal canal and reduced mobility of this region increase the likelihood of significant neural compromise compared to other spinal regions.

Typical Presentation

Site

Mid-thoracic spine (T4-T8 most common), with pain referred to chest wall, lateral trunk, or abdomen depending on nerve root involvement; symptoms often unilateral

Quality

Sharp, burning, or electric in nature; may include radicular pain following dermatomal distribution; potential sensory paresthesias

Intensity

Highly variable from mild intermittent pain to severe constant pain; neurological symptoms may progress insidiously

Aggravating

Extension, rotation toward affected side, thoracic hyperextension, sustained postures, coughing or Valsalva maneuver, repetitive flexion activities

Relieving

Flexion-based positions, recumbent posture, anti-inflammatory medications, rest from provocative activities, core stabilization

Associated

Radiculopathy in dermatomal pattern, intercostal pain, chest wall referred pain mimicking cardiac or visceral conditions, potential lower extremity weakness or spasticity if myelopathic, sensory disturbances, gait dysfunction in severe cases

Orthopaedic Tests

Test descriptions are written with AI assistance from standard clinical texts. Where a test lists Sources, its description has been checked against them; those sources are independent and do not endorse OsteoKit. Accuracy figures and grades (A–D) appear only when checked against the published study; tests without one are marked “No accuracy study”.

Further reading: full test procedures are described in standard clinical examination texts, e.g. Magee & Manske, Orthopedic Physical Assessment (7th ed.), and Cook & Hegedus, Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd ed.).

No accuracy study

Spurling Test (Cervical Compression Test)

Procedure

Patient seated. Extend the neck and side-bend it towards the painful side, then apply gentle downward pressure through the head.

Positive Finding

Reproduction of the familiar radiating arm pain on the tested side.

Interpretation

A test for cervical nerve-root irritation. It does not test a thoracic disc; a positive result points to the neck as the source of arm symptoms. Spurling's test loads the neck and tests cervical nerve roots; it cannot test a thoracic disc. A literature search (Europe PMC, September 2026) found no study of how accurate clinical tests are for thoracic nerve-root or thoracic disc problems. The figure stored here came from cervical studies, so no figure is shown.

Sources

No accuracy study

Lhermitte's Sign

Procedure

Patient seated. Ask the patient to bend the head forward, or flex the neck passively, and report any unusual sensations.

Positive Finding

A brief electric-shock sensation running down the spine or into the limbs on neck flexion.

Interpretation

Points to irritation of the spinal cord, most often in the cervical region (for example cervical myelopathy or multiple sclerosis). It is not a typical feature of thoracic disc herniation. A positive sign needs medical referral for assessment and imaging. A literature search (Europe PMC, September 2026) found no study of how accurate clinical tests are for thoracic nerve-root or thoracic disc problems. The figure stored here came from cervical studies, so no figure is shown.

Sources

No accuracy study

Hoffmann's Sign

Procedure

Hold the patient's relaxed middle finger and flick the nail downwards.

Positive Finding

Reflex flexion of the thumb and index finger.

Interpretation

An upper motor neuron sign in the arm, reflecting compression of the cervical spinal cord. A thoracic disc compresses the cord below the arm segments, so Hoffmann's sign should be normal; if it is positive, look for a cervical problem. Hoffmann's sign is a hand reflex that reflects compression of the cervical spinal cord, above the level of a thoracic disc. A literature search (Europe PMC, September 2026) found no study of how accurate clinical tests are for thoracic nerve-root or thoracic disc problems. The figure stored here came from cervical studies, so no figure is shown.

Sources

No accuracy study

Upper Limb Tension Test (ULTT)

Procedure

Patient supine. With the shoulder girdle held down, abduct and externally rotate the shoulder, extend the elbow and wrist, then add neck side-flexion away from the test side.

Positive Finding

Reproduction of the patient's familiar arm symptoms, eased by neck side-flexion towards the test side.

Interpretation

Tests the nerves of the arm and the cervical roots, not the thoracic spine, and it is not a test for myelopathy. A positive result suggests a cervical or peripheral nerve source for arm symptoms rather than a thoracic disc.

Sources

No accuracy study

Clonus Test (Patellar or Ankle Clonus)

Procedure

Patient supine, knee slightly bent and supported. Briskly dorsiflex the ankle and hold gentle pressure, watching for rhythmic beats. For the knee, push the patella sharply downwards with the leg straight.

Positive Finding

Rhythmic, repeated muscle contractions. Sustained clonus is always abnormal; a few beats that stop may be normal if symmetrical.

Interpretation

Sustained clonus is an upper motor neuron sign. With a thoracic disc herniation it suggests the spinal cord is being compressed, which needs urgent medical referral and MRI.

Sources

No accuracy study

Tandem Gait / Romberg Test

Procedure

Ask the patient to walk heel-to-toe in a straight line. Then ask them to stand with feet together, first with eyes open and then eyes closed, for 30 seconds, standing close by to prevent a fall.

Positive Finding

Unable to walk heel-to-toe, or balance is maintained with eyes open but lost when the eyes close (positive Romberg).

Interpretation

A positive Romberg suggests loss of position sense, which can occur with spinal cord compression in the dorsal columns. With a suspected thoracic disc herniation, new gait or balance problems need urgent medical referral.

Sources

⚠ Red Flags

  • •Progressive neurological deficit including lower extremity weakness, ataxia, or spasticity suggesting myelopathy
  • •Bowel or bladder dysfunction indicating cauda equina syndrome or severe cord compression
  • •Upper motor neuron signs (hyperreflexia, Babinski sign, clonus) indicating spinal cord involvement
  • •Acute onset severe central back pain with neurological symptoms
  • •Fever with spinal pain suggesting infection
  • •History of cancer, unexplained weight loss, or systemic illness with new spinal symptoms
  • •Trauma with acute neurological deficit
  • •Severe unremitting pain unresponsive to conservative care for >6-8 weeks with imaging confirmation

⚡ Yellow Flags

  • •High health anxiety or catastrophic thinking regarding cardiac mimicry of chest symptoms
  • •Significant psychological distress or depression affecting pain perception and recovery
  • •Poor coping strategies or maladaptive pain behaviors
  • •Secondary gain factors or litigation involvement
  • •Excessive pain behaviors disproportionate to clinical findings
  • •Sleep disturbance due to pain and anxiety
  • •Social isolation or lack of support system affecting motivation for rehabilitation

Osteopathic Techniques

Most are managed without surgery. Surgery is considered when conservative care fails or nerve symptoms worsen, and for giant calcified discs or signs of cord compression (myelopathy) on MRI.

Safety: New unsteady walking, leg weakness, sensory loss at a level on the trunk, or bladder or bowel change can mean the spinal cord is compressed. Refer urgently; do not use manual therapy.

Region

Thoracic spine (segments above and below the affected level)

Technique

Articulation, thoracicNo trials found

Rationale

Gentle movement of segments next to the disc, not the affected level. Stop if nerve or cord symptoms appear.

How it's done & evidence

How it's done

Rhythmic, low-velocity movement of restricted thoracic segments within their passive range, with no thrust. The patient is seated, side-lying or prone. For neck problems the upper thoracic segments (T1–T6) are the usual focus.

Evidence in Thoracic Disc Herniation

Searched 23 Oct 2026: no trials of thoracic mobilisation in thoracic disc herniation.

Sources

Region

Thoracic paraspinals, rhomboids and rib angles

Technique

Soft tissue, thoracic and rib cageNo trials found

Rationale

Eases protective muscle spasm so the patient can move more comfortably.

How it's done & evidence

How it's done

Hands-on soft-tissue work (kneading, stretching and sustained pressure) to the thoracic paraspinals, rhomboids, middle trapezius and the muscles along the rib angles, usually prone or side-lying.

Evidence in Thoracic Disc Herniation

Searched 23 Oct 2026: no trials of soft tissue technique in thoracic disc herniation.

Sources

Region

Thoracic spine (non-acute, once cord compression is ruled out)

Technique

Muscle energy, thoracicNo trials found

Rationale

Low-force and patient-powered. Use only once serious nerve or cord involvement is ruled out.

How it's done, cautions & evidence

How it's done

Seated or supine. The restricted segment is localised (using the head and neck as a lever for T1–T4, the trunk for T5–T12) and taken to its barrier while the transverse process is monitored. The patient gently pushes back toward neutral for a few seconds against equal resistance, relaxes, and the new barrier is taken up. Repeat, then re-check.

Cautions

Do not use with an acute fracture or dislocation. Recent ligament, tendon or muscle injury may make it unsuitable, and spasm driven by the central nervous system responds poorly. The patient must be able to follow instructions.

Evidence in Thoracic Disc Herniation

Searched 23 Oct 2026: no trials of thoracic MET in thoracic disc herniation.

Rehabilitation Exercises

Thoracic Flexion Mobilization (Cat-Camel Stretch)

Range of MotionBeginner

Thoracic Rotation Stretch (Kneeling Figure-4)

StretchingBeginner

Pectoralis Major and Minor Doorway Stretch

StretchingBeginner

Scapular Retraction and Shoulder Blade Squeeze

PosturalBeginner

Transversus Abdominis Activation (Supine Drawing-In)

StrengtheningBeginner

Dead Bug Progression

StrengtheningIntermediate

Modified Bird Dog with Thoracic Stability

StrengtheningIntermediate

Thoracic Rotation in Quadruped (Thread the Needle)

Range of MotionIntermediate

Wall Angels for Scapular Stability

PosturalIntermediate

Prone Cobras with Thoracic Extension (Progressed)

StrengtheningIntermediate

Plank with Progressive Perturbations

BalanceAdvanced

Stationary Cycling with Neutral Spine Posture

CardiovascularIntermediate

Referral Criteria

  • •Progressive neurological deficits (weakness, sensory loss, gait disturbance) suggesting myelopathy - urgent referral for MRI and a surgical opinion. Thoracic myelopathy is not managed conservatively: the presence of myelopathic signs is itself the referral trigger, irrespective of whether conservative care has been attempted or how long it has run.
  • •Bowel or bladder dysfunction indicating spinal cord compromise
  • •Severe central cord symptoms with imaging confirmation of significant compression
  • •Persistent radiculopathy unresponsive to conservative care beyond 8-12 weeks with imaging confirmation
  • •Acute traumatic onset with neurological deficit requiring urgent imaging and specialist assessment
  • •Imaging evidence of calcified or ossified posterior longitudinal ligament (OPLL) contributing to canal stenosis
  • •Suspected infection (discitis, osteomyelitis) with fever and spinal pain
  • •Suspected malignancy with unexplained weight loss and spinal pathology
  • •Failure to improve with conservative care after 6-8 weeks of structured rehabilitation
  • •Patient anxiety regarding cardiac symptoms necessitating cardiology clearance
  • •Complex cases requiring multidisciplinary management by spine specialist, neurologist, or neurosurgeon