The Spine Diagnosis

The Spine: Impairments, Diagnoses, and Management Guidelines

Spinal Pathologies and Impaired Spinal Function

Pathology of the Intervertebral Disc

  • Herniated Disc:

    • Occurs when a disc between vertebrae has a weak spot in annulus, extending beyond normal perimeter.

    • Many people may have a bulging disc without symptoms.

    • Symptoms arise when the herniated disc impinges nerves.

    • Pain referral:

      • Lower back: referred to hips, buttocks, legs, and feet.

      • Upper back/cervical spine: pain radiates from neck to arm and fingers.

    • ~90% of bulging discs occur in lower back (lumbar area).

    • Common herniation direction: posterolateral.

Types of Herniations

  1. Protrusion:

    • Displaced material remains connected to the disc.

    • Nuclear material contained by annulus and supporting structures.

  2. Extrusion:

    • Nuclear material extends beyond the posterior longitudinal ligament, detected via MRI.

    • May still be in contact with the disc or completely separated.

  3. Sequestration:

    • Extruded material no longer contained by annulus, has moved away from intervertebral disc.

Causes of Disc Herniation

  • Factors contributing to herniation:

    • Repeated forward bending and lifting.

    • Prolonged postural stress and torsional stresses.

    • Trauma and aging.

  • Annulus Fibrosus:

    • Tough circular exterior surrounding the nucleus pulposus.

    • Composed of ring of ligament fibers connecting spinal vertebrae.

    • Breaks down due to sustained loading, leading to prolonged healing time and weaker structure.

Disc Degeneration (Degenerative Disc Disease - DDD)

  • Diminished water content and disc height as degeneration occurs.

  • Leads to:

    • Stenosis:

      • Narrowing of spinal canal or nerve root canal.

    • Segmental Instability:

      • Impaired control in neutral zones due to decreased neuromuscular stabilizing capacity.

Spinal Stenosis

  • Definition: Narrowing of the spinal canal causing inflammation or displacement of spinal structures, potentially impinging nerves or spinal cord.

  • Causes:

    • Conditions like osteoarthritis, bone spurs, and herniated discs that narrow the canal.

  • Most patients experience pain when nerves become impinged due to narrowing.

Bone Spurs (Osteophytes)

  • Develop on facet joints and spinal vertebrae, often due to bone-on-bone friction or aging.

  • May or may not cause pain; large spurs can irritate/compress nerves.

  • Natural response to joint instability aiming to restore stability.

Spinal Arthritis

  • Occurs in facet joints, also known as degenerative joint disease (DJD).

  • Results in degeneration of both the IV disc and facet joints, causing pain and limitation in movement.

  • Pain can radiate to other body parts and lead to decreased flexibility.

Spondylosis

  • Age-related changes lead to weaker, thinner cartilage in discs and joints.

  • Medical term for disc degeneration is Spondylosis, characterized by narrowing of disc space.

Spondylolysis and Spondylolisthesis

  • Spondylolysis:

    • Bony defect in the pars interarticularis, often due to stress fractures.

  • Spondylolisthesis:

    • One vertebra slips over another, commonly in the lumbar region.

    • Symptoms include lower back pain, tightness, and muscle soreness.

Foraminal Stenosis

  • Definition: Narrowing of the foraminal canal where spinal nerves exit.

  • Causes:

    • Bone spurs, herniated/bulging discs, arthritis, and ligaments thickening.

Surgical Intervention: Cervical Discectomy

  • Surgery to remove one or more cervical discs, usually combined with vertebral fusion.

  • May be performed without fusion in younger patients with herniated discs.

Radicular Pain

  • Defined as pain radiating into the lower extremities along spinal nerve root pathways, often associated with conditions like sciatica.

  • Symptoms may include numbness, tingling, and muscle weakness.

Progression of Treatment in Spinal Conditions

Acute Stage (Protection Phase)

  • Symptoms: Pain, inflammation, guarded posture, inability to perform activities of daily living (ADLs).

Management Interventions – Acute Phase

  • Educate patient on self-management, reduce acute symptoms using modalities.

  • Teach postural awareness and kinesthetic training.

  • Safe movement practices are demonstrated.

Subacute Phase (Controlled Motion) Management

  • Patients require education in self-management and safe postures.

  • Emphasize mobility improvement and neuromuscular control.

Chronic Phase/Return to Function Management

  • Focus on spinal control in high-intensity activities.

  • Increase mobility and improve muscle performance through specific exercises.

  • Teach techniques for stress relief, relaxation, and healthy exercise habits.

Contraindications to Specific Spinal Movements

  • Extension should be avoided if it worsens pain or if saddle anesthesia/bladder issues are present.

  • Flexion should be avoided if it exacerbates symptoms or pain.

Peripherization and Centralization

  • Peripherization: Pain moves away from the spine and down the extremities.

  • Centralization: Pain moves towards the center of the spine.