J Korean Soc Spine Surg.  2017 Mar;24(1):55-58. 10.4184/jkss.2017.24.1.55.

First Coccygeal Vertebra Dislocation Treated by Open Reduction and Internal Fixation

• Chang SA
• Yoo HS
• Kim K

• KMID: 2402844
• DOI: http://doi.org/10.4184/jkss.2017.24.1.55

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.

Keyword

Coccygeal vertebrae dislocation; Coccygodynia; Open reduction and internal fixation

MeSH Terms

Adolescent
Dislocations*
Female
Humans
Methods
Spine*

Figure

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  Fig. 1. A lateral radiograph of the coccyx shows a displaced first coccygeal vertebra.

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  Fig. 2. Preoperative computed tomography shows sacrococcygeal and intercoccygeal dislocation.

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  Fig. 3. An intraoperative image shows open reduction and internal fixation with a 4.0-mm partial-thread cancellous screw with a washer.

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  Fig. 4. (A, B) Postoperative radiographs show anatomically reduced coc-cyx dislocation.

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