PMID- 30095471 OWN - NLM STAT- MEDLINE DCOM- 20191111 LR - 20191111 IS - 2160-3251 (Electronic) IS - 2160-3251 (Linking) VI - 8 IP - 3 DP - 2018 Jul-Sep TI - Traumatic Atlanto-Occipital Dissociation and Atlantoaxial Instability: Concomitant Ligamentous Injuries without Neurologic Deficit: A Case Report. PG - e62 LID - 10.2106/JBJS.CC.18.00021 [doi] AB - CASE: A 35-year-old man was involved in a motor-vehicle collision and sustained multiple thoracoabdominal and extremity injuries. A high injury burden and a normal neurologic examination contributed to a delay in diagnosing a ligamentous, combined atlanto-occipital dissociation (AOD) and vertical atlantoaxial injury (AAI). Additional imaging revealed the combined injury, and the patient underwent an occipitocervical fusion. CONCLUSION: To our knowledge, this is the first case of a simultaneous traumatic AOD and AAI without fracture in a neurologically intact patient. Knowledge of reliable and easily applied radiographic relationships is important to expeditiously diagnose potentially lethal yet easily overlooked occipitocervical injuries. FAU - Tobert, Daniel G AU - Tobert DG AD - Harvard Combined Orthopaedic Residency Program, Massachusetts General Hospital, Boston, Massachusetts. FAU - Ferrone, Marco L AU - Ferrone ML AD - Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts. FAU - Czuczman, Gregory J AU - Czuczman GJ AD - Radiology Imaging Associates, Englewood, Colorado. LA - eng PT - Case Reports PT - Journal Article PL - United States TA - JBJS Case Connect JT - JBJS case connector JID - 101596828 SB - IM MH - Accidents, Traffic MH - Adult MH - Axis, Cervical Vertebra/diagnostic imaging/*injuries/surgery MH - Cervical Atlas/diagnostic imaging/*injuries/surgery MH - Humans MH - Ligaments, Articular/diagnostic imaging/*injuries MH - Male MH - *Multiple Trauma MH - Spinal Fusion EDAT- 2018/08/11 06:00 MHDA- 2019/11/12 06:00 CRDT- 2018/08/11 06:00 PHST- 2018/08/11 06:00 [pubmed] PHST- 2019/11/12 06:00 [medline] PHST- 2018/08/11 06:00 [entrez] AID - 10.2106/JBJS.CC.18.00021 [doi] PST - ppublish SO - JBJS Case Connect. 2018 Jul-Sep;8(3):e62. doi: 10.2106/JBJS.CC.18.00021.