Related Experiment Videos
Atlantoaxial arthrodesis using interlaminar clamps. An improved technique
1Cervical Spine Service, Hospital for Joint Diseases Orthopaedic Institute, New York, New York.
Spine
|March 1, 1992
Summary
A new posterior atlantoaxial arthrodesis technique using Halifax interlaminar clamps achieved 80% fusion in 12 weeks. While effective, potential clamp loosening necessitates careful application and possible device improvements for optimal surgical stability.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Spinal Fusion Techniques
Background:
- The atlantoaxial joint's mobility poses challenges for surgical stabilization.
- Existing atlantoaxial arthrodesis methods have variable success rates and safety profiles.
Purpose of the Study:
- To introduce and evaluate an improved posterior atlantoaxial arthrodesis technique.
- To assess the efficacy and safety of Halifax interlaminar clamps with bone grafting.
Main Methods:
- A novel posterior atlantoaxial arthrodesis was performed using Halifax interlaminar clamps and bone graft.
- Fusion rates, revision surgeries, and reasons for nonunion were analyzed.
Main Results:
- Eighty percent (20/25) of patients achieved atlantoaxial union within 12 weeks.
- Two patients required revision for clamp fixation, with successful fusion post-revision.
- Three patients experienced nonunion due to clamp loosening, often linked to inadequate screw tightening.
Conclusions:
- The Halifax interlaminar clamp technique offers benefits for posterior atlantoaxial arthrodesis.
- Potential clamp loosening is a concern, possibly related to clamp design and application technique.
- Improvements in clamp design and surgical technique are suggested to minimize nonunion risks, especially in patients with rheumatoid arthritis.