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KMID : 0388720060130030184
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Journal of Korean Society of Spine Surgery
2006 Volume.13 No. 3 p.184 ~ p.190
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MR Predictors of Bone Cement Leakage in Percutaneous Vertebroplasty and Kyphoplasty for Painful Osteoporotic Vertebral Compression Fracture
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Jun Deuk-Soo
Shin Won-Ju
Ko Young-Hwan
Moon Sung-Hoon
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Abstract
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Study design: Retrospective study
Objectives: To determine MR findings that affect the bone cement leakage in patients with osteoporotic compressive fractures who are receiving percutaneous vertebroplasties and kyphoplasties.
Materials and Methods: A retrospective review was conducted on 105 patients with 131 vertebrae treated by percutaneous vertebroplasties (group 1: 66 patients and 78 cases) and kyphoplasties (group 2: 39 patients and 53 cases) from October 2001 to October 2005. The study was performed to determine whether cement leakage was related to any of the following MR findings: level of injured vertebra, severity of anterior height loss, posterior cortical disruption, endplate disruption, presence of either vacuum or cystic portions, linear sclerosis that was low in signal intensity in T1 and T2-weighted images.
Results: Bone cement leakage was detected in 51 (65.3%) of 78 treated vertebrae in group 1 and 18 (33.9%) of 53 treated vertebrae in group 2. There was a statistically significant difference between the incidences (p<0.05). Vertebral endplate disruption had a positive correlation in both groups (p<0.05). There was more cement leakage in group 1 (48.5%) than in group 2 (18.1%) in cases of endplate disruption (p<0.05). Vacuum or cystic change had negative correlations to bone cement leakage in group 1 (p<0.05). No other MR findings demonstrated a statistically significant correlation with bone cement leakage.
Conclusion: On the MR findings, vertebral endplate disruption and vacuum or cystic change in fractured vertebrae demonstrated a significant correlation with bone cement leakage in group 1. There was relatively less cement leakage into the intervertebral spaces with kyphoplasties than with vertebroplasties in the cases of vertebral endplate disruption.
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KEYWORD
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Osteoporotic compressive fracture, Vertebroplasty, Kyphoplasty, Bone cement leakage
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