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Spine fusion for atlanto-axial instability
The Journal of Bone and Joint Surgery. American Volume
|April 1, 1976
Summary
Spine fusions effectively treated atlanto-axial instability in 57 patients. Most patients experienced symptom resolution after Gallie or occipitocervical fusion, indicating successful surgical outcomes for this condition.
Area of Science:
- Orthopedics
- Neurosurgery
- Spinal Surgery
Background:
- Atlanto-axial instability presents diagnostic and therapeutic challenges.
- Instability can result from deficient odontoid, ligaments, or rotatory fixation.
- Surgical intervention aims to restore stability and alleviate symptoms.
Purpose of the Study:
- To evaluate the long-term outcomes of spine fusions for atlanto-axial instability.
- To assess the efficacy of different fusion techniques (Gallie vs. occipitocervical).
- To analyze symptom resolution based on instability type and surgical approach.
Main Methods:
- A follow-up study of 57 patients undergoing spine fusion for atlanto-axial instability.
- Classification of instability into Type I (deficient odontoid), Type II (deficient ligaments), and Type III (rotatory fixation).
- Surgical procedures included Gallie fusions (46 patients) and occipitocervical fusions (11 patients).
Main Results:
- Average patient age was 30 years, with 50% experiencing significant trauma.
- Preoperative symptoms included pain (29), neurological complaints (24), and instability.
- Fusion success rates: 1 non-union in 46 Gallie fusions, 2 non-unions in 11 occipitocervical fusions.
- Average follow-up of 4.2 years showed symptom resolution in almost all patients.
Conclusions:
- Spine fusion is a highly effective treatment for atlanto-axial instability.
- Both Gallie and occipitocervical fusion techniques demonstrate good outcomes.
- Surgical intervention leads to significant symptom resolution and improved quality of life.