Ann Rehabil Med.  2011 Dec;35(6):844-851. 10.5535/arm.2011.35.6.844.

Predictive Risk Factors for Refracture after Percutaneous Vertebroplasty

• Kang SK
• Lee CW
• Park NK
• Kang TW
• Lim JW
• Cha KY
• Kim JH

• KMID: 2266810
• DOI: http://doi.org/10.5535/arm.2011.35.6.844

Abstract

OBJECTIVE
To identify risk factors for developing a vertebral refracture after percutaneous vertebroplasty. METHOD: A retrospective analysis of 60 patients who had undergone percutaneous vertebroplasty between January 2008 and April 2010 was conducted. All patients were observed for a 1 year follow-up period, and fracture was defined when it was both clinically reported and radiographically confirmed. Twenty-seven patients with a refractured vertebra and 33 patients without a refracture were included. Of the 60 patients, 20 presented with a refracture from a cemented vertebra, whereas the remaining 40 patients did not. Clinical, imaging and procedure-related factors for each group were analyzed by the Fisher's exact, chi-square, and the Mann-Whitney U-tests.
RESULTS
Local kyphotic angle and sagittal index were significant as a result of researching various risk factors related to vertebral refracture (p<0.001, p<0.001, respectively) and refracture from a cemented vertebra itself (p=0.004, p<0.001, respectively). Other factors were not significant.
CONCLUSION
Patients who had a high preoperative local kyphotic angle and a high sagittal index required a close follow-up and attention.

Keyword

Risk factor; Refracture; Percutaneous vertebroplasty; Local kyphotic angle; Sagittal index

MeSH Terms

Follow-Up Studies
Humans
Retrospective Studies
Risk Factors
Spine
Vertebroplasty

Figure

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  Fig. 1 Cement distribution patterns (A) T type: Sponge-like cement filling a vertebral body. (B) C type: Compact and solid cement filling a vertebral body.

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  Fig. 2 Measurement of kyphotic deformity. ABH: anterior body height, PBH: posterior body height.

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  Fig. 3 Measurement of the sagittal index.

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