![]() One patient developed wound fat liquefaction which resolved by changing the dressing. Except one patient still had Frankel grade B neurological injury at 12 months after surgery, the other patients improved their neurological situation (at 1 grade in Frankel scale). JOA score was significantly improved from 6.3 ± 3.1 preoperatively to 11.1 ± 4.6 at 12 months after operation ( P = 0.007), with 50.5 ± 25.7% recovery rate and 66.7% excellent and good rate. Odontoid fracture healing was obtained in all patients within 9 months, and graft fusion was achieved within 6 months. ![]() Mean follow-up time of all 12 cases was 16.4 months (range, 12 to 48 months). Frankel grading system was used for the evaluation of neurological situation. Upper limbs, lower limbs and sphincter functions were assessed using the Japanese Orthopaedic Association (JOA) score. Fracture healing and bone fusion were determined on X-ray scan. Accordingly, individualized surgeries were performed. This is a retrospective study of 12 patients (5 females and 7 males age, 21-65 years) who underwent internal fixation for odontoid fractures (type II and shallow type III) and atlantoaxial instability in 6 cases, C2-3 instability in 4 cases, simultaneous C1-2 and C2-3 instability in 2 cases between January 2005 and June 2012. The aim of this study was to further investigate the surgical treatment strategies and curative effects for odontoid fractures combined with instability of adjacent segments. ![]() At present, traumatic atlantoaxial dislocation or C2-3 instability complicating odontoid fractures remains rarely reported.
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