First Coccygeal Vertebra Dislocation Treated by Open Reduction and Internal Fixation

ABSTRACT

STUDY DESIGN: Case report. OBJECTIVES: To report the effectiveness of open reduction and internal (screw) fixation treatment performed to treat dislocation of the first coccygeal vertebra. SUMMARY OF LITERATURE REVIEW Most treatment methods for coccygeal dislocation were conservative treatment for acute coccygodynia and coccygectomy for chronic coccygodynia. MATERIALS AND METHODS: A 18-year-old female presented with severe coccygodynia due to a fall down the stairs. Computed tomography showed dislocation of the first coccygeal vertebra. We performed open reduction and internal fixation with a 4.0-mm shortthread cancellous screw with a washer, with no additional procedure for bone union. RESULTS: Union was achieved 10 weeks postoperatively. CONCLUSIONS: Open reduction and internal (screw) fixation can be a useful method for coccygeal vertebra dislocation.