title: Bipartite atlas mimicking traumatic atlantoaxial instability following a rugby tackle.
abstract: We report a very rare case of a congenital cervical spine anomaly. The low occurrence rate of this anatomic variant combined with the high frequency of cervical injuries in sports medicine made this case a diagnostic challenge on both emergency and orthopaedic departments. After reading, it should give the clinician a more consistent view in differentiating the traumatic or congenital origin of the disorder seen on radiographs, as well as what can be expected in the future when diagnosis is set.
authors.affiliation: University Hospital Antwerp, Orthopaedics, Wilrijkstraat 10, Edegem, 2650, Belgium.
authors.forename: Christophe
authors.initials: C
authors.lastname: Jans
authors.forename: Geert
authors.initials: G
authors.lastname: Mahieu
authors.forename: Roger
authors.initials: R
authors.lastname: Van Riet