C-Collars: Uses, Application, and Cervical Spine Support

Cervical Collar (C-Collar) Indications

A rigid or semi-rigid orthosis that limits cervical spine motion (flexion, extension, rotation, lateral bending).

Clinical Indications

• Trauma: Mechanism suggesting cervical injury (MVC, fall >3 ft, diving, axial load) — until cleared clinically/imaging.
• Known cervical fracture/dislocation: Pre-op stabilization, post-op immobilization.
• Cervical spine surgery: Post-op (fusion, laminectomy, disc replacement) per surgeon protocol.
• Severe cervical spondylosis/myelopathy: Temporary symptomatic support.
• Rheumatoid arthritis with C1–C2 instability.
• Diagnostic imaging: MRI/CT if movement could blur study (rare; usually just positioning).

Application Principles

1. Size correctly: chin rests on chin piece; no pressure on clavicles/trachea.
2. Apply with manual in-line stabilization (MILS) — two-person technique ideal.
3. Pad pressure points (occiput, mandible, clavicles).
4. Monitor skin integrity q2–4h; hygiene, repositioning.
5. Log-roll for turns; maintain neutral alignment.

Types

• Rigid (Philadelphia, Miami J, Aspen, Vista): Maximum restriction.
• Semi-rigid / Soft: Minor strains, comfort; not for trauma clearance.
• Halo vest: Definitive immobilization for unstable fractures.

Complications of Prolonged Use

• Pressure ulcers (occiput, chin, scapulae)
• Skin breakdown, dermatitis
• Swallowing difficulty, aspiration risk
• Venous stasis → DVT
• Muscle atrophy, contractures
• Psychological distress

Clear cervical spine clinically (NEXUS/Canadian C-Spine Rule) or by imaging ASAP to minimize collar time.