title: Midshaft clavicle fractures associated with atlantoaxial rotatory displacement: a report of two cases.
abstract: Two cases of clavicle fractures associated with atlantoaxial rotatory displacement as well as 11 additional cases from the literature are presented. Most cases occur in girls 6 to 10 years old. The head is most often laterally bent toward and rotated away from the fractured clavicle. There is often a delay in making the diagnosis, which is best demonstrated by dynamic CT. Treatment of the clavicle fracture is straightforward, but failure to recognize and treat the C1-2 rotatory displacement promptly can lead to fixed C1-2 deformity. Displacement recognized within the first 3 weeks of injury can be successfully treated nonoperatively. A delay of 6 weeks or greater in the diagnosis leads to fixed deformity at C1-2 that can be addressed with a limited cervical fusion.
authors.affiliation: Shriners Hospitals for Children, Los Angeles, California 90020, USA. richard_bowen@hotmail.com
authors.forename: Richard E
authors.initials: RE
authors.lastname: Bowen
authors.forename: Jung Y
authors.initials: JY
authors.lastname: Mah
authors.forename: Norman Y
authors.initials: NY
authors.lastname: Otsuka
mesh_terms: D001268:Atlanto-Axial Joint / Q000000981:diagnostic imaging / Q000293:injuries*; D002648:Child; D002968:Clavicle / Q000000981:diagnostic imaging / Q000293:injuries*; D005260:Female; D006801:Humans; D011859:Radiography; D014103:Torticollis / Q000000981:diagnostic imaging / Q000209:etiology*