Congenital Unilateral Atlanto-Occipital Rotatory Subluxation: Rare Cause of C1 Neuralgia

Conclusion. Our case depicts a model of slow creeping deformation due to left C1 superior articular facet dysplasia. An abnormal facet slope allowed the occipital condyle to migrate posteriorly and medially leading to crowding of the left C1 foramen. Although the etiology was congenital, the neck spasm was delayed till fourth decade. A secondary C1 foramen stenosis led to C1 occipital neuralgia that presented as an intractable headache. Level of Evidence: 5
Source: Spine - Category: Orthopaedics Tags: CASE REPORT Source Type: research