[A special instrument: the halo fixator].

Area of Science:

• Orthopedic surgery
• Spinal surgery
• Biomedical engineering

Background:

• Unstable fractures of the craniocervical junction and upper cervical spine require robust immobilization.
• External fixation combined with body casting offers a method for managing these complex injuries.
• Applications extend to scoliosis management and post-operative spinal stabilization.

Purpose of the Study:

• To describe the application of an external fixator with a body cast for craniocervical and upper cervical spine injuries.
• To evaluate its use in presurgical scoliosis treatment and complex spinal deformity operations.
• To detail the surgical technique and outcomes of this immobilization method.

Main Methods:

• The halo body cast system involves attaching a head ring to the skull and connecting it to a body cast.
• Surgical technique includes precise placement of cranial pins with controlled torque.
• Applications cover closed repositioning, extension treatment, and conservative management of spinal injuries.

Main Results:

• Achieved secure external stabilization for unstable upper cervical spine injuries.
• Demonstrated improved correction outcomes in patients with neuromuscular scoliosis undergoing surgical treatment.
• Reported procedure-specific complications such as pin site infections and loosening, alongside decreased patient acceptance with prolonged use.

Conclusions:

• The halo body cast is effective for immobilizing unstable craniocervical and upper cervical spine fractures.
• It offers benefits in managing spinal deformities like scoliosis.
• Potential complications and patient acceptance are important considerations for long-term therapy.