Spinal Orthoses

Spinal Orthoses - The Spine's Scaffolding

• Definition: External devices applied to the trunk to limit spinal motion, correct deformity, reduce axial loading, or provide support.
• Goals:
  • Motion control (immobilization/restriction)
  • Spinal alignment & deformity correction (e.g., scoliosis, kyphosis)
  • Pain relief
  • Support & stabilization (post-trauma, post-op)
  • Unloading (e.g., vertebral compression fractures)
• Classification (by region): Cervical (CO), Cervicothoracic (CTO), Thoracolumbosacral (TLSO), Lumbosacral (LSO), Sacroiliac (SIO).
• Biomechanical Principles:
  • Total contact for even pressure distribution.
  • 3-point pressure system for corrective forces.
  • Kinesthetic reminder to limit motion.

⭐ Milwaukee brace (a CTLSO) is used for scoliosis curves with apex at or above T8; Boston brace (a TLSO) for curves with apex below T8.

Cervical Orthoses - Neck Nurturers

Support/immobilize C-spine. Vary by rigidity & motion control.

• Soft Collar (e.g., Thomas Collar)
  • Indications: Minor neck pain, whiplash.
  • Action: Kinesthetic reminder, minimal motion restriction.
• Rigid Collars (e.g., Philadelphia, Miami J, Aspen)
  • Indications: Stable C-spine injuries, post-op.
  • Action: ↑ motion restriction (esp. flexion/extension).
  • Philadelphia: Plastazote, bivalved, tracheal opening.
  • Miami J/Aspen: Modern, improved skin care.
• Cervicothoracic Orthoses (CTO)
  • Indications: Unstable C-spine, need upper thoracic control.
  • SOMI (Sternal Occipital Mandibular Immobilizer)
    • Controls C1-C5 flexion. 📌 SOMI: "Some" control, mainly flexion.
  • Minerva Jacket
    • Non-invasive, good all-plane control.
  • Halo-Vest
    • Most rigid immobilization.
    • Indications: Unstable fractures (e.g., Jefferson, Hangman's).
    • Pins: 4-6 (adults), 8-12 lbs torque.

    ⭐ Halo-vest provides the highest degree of cervical spine immobilization among all orthoses.

Thoracolumbar Orthoses - Trunk Tamers

• Goal: Stabilize thoracolumbar spine (mid-thoracic to L4/L5), limit motion, correct deformity, reduce pain.
• Types & Action:
  • Rigid TLSOs: Employ 3-point pressure; restrict flexion, extension, lateral bending, rotation.
  • Flexible (Corsets): Increase intra-abdominal pressure; proprioceptive feedback.
• Key Rigid TLSOs & Uses:
  • Knight-Taylor Brace: Sagittal-coronal control. For stable mid-low thoracic/lumbar fractures (T6-L3), postural support.
  • Jewett / CASH (Cruciform Anterior Spinal Hyperextension) Brace: Hyperextension. For stable anterior wedge compression fractures (T6-L2); primarily limits flexion.
  • Boston Brace: For scoliosis (Cobb angle 20-40°, Risser 0-2), kyphosis. Custom-molded.
  • Molded Body Jacket (TLSO): Maximum immobilization. For unstable fractures (non-operative/post-operative), significant deformities.

⭐ The Boston brace is the most common TLSO for idiopathic scoliosis, aiming to halt curve progression in skeletally immature patients with Cobb angles between 20-40°.

Lumbosacral & Application - Low Back & Logic

• Lumbosacral Orthoses (LSO):
  • Chairback Brace: Sagittal control (flexion/extension). For low back pain (LBP), stable fractures.
  • Knight-Taylor Brace: Sagittal-coronal control. For thoracolumbar issues, post-op.
  • Rigid LSO (e.g., Boston Overlap Brace, Raney): Triplanar control. For spondylolisthesis, instability.
• Sacroiliac (SI) Orthoses:
  • SI Belts/Corsets: Compress SI joints. For SI joint dysfunction, pregnancy-related LBP.
• Application & Logic:
  • Principle: 3-point pressure system for stabilization.
  • Fit: Snug, not constricting; monitor skin integrity.
  • Indications: Pain relief, postural support, motion restriction, post-op.
  • Complications: Skin breakdown, muscle atrophy (long-term use), discomfort.

⭐ Most LSOs aim to reduce gross trunk motion rather than specific intersegmental vertebral motion effectively enough for unstable conditions requiring surgical fixation.

High‑Yield Points - ⚡ Biggest Takeaways

• Spinal orthoses aim to control motion, correct deformity, reduce pain, and provide spinal support.
• Cervical orthoses: Philadelphia collar (moderate control); Halo vest (maximum cervical immobilization).
• TLSOs: Jewett brace (hyperextension for anterior compression fractures); Taylor brace (flexion control).
• LSOs (e.g., Knight brace) offer lumbosacral support, limiting flexion/extension, lateral bending.
• Scoliosis braces: Milwaukee (CTLSO) for high thoracic curves; Boston (TLSO) for thoracolumbar curves.
• Key uses: stable fractures, post-op care, scoliosis, spondylolisthesis, degenerative disc disease.