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Journal of Korean Neurosurgical Society 2007;41(5): 291-294.
Open Kyphoplasty Combined with Microscopic Decompression for the Osteoporotic Burst Fracture.
Seok Won Kim, Chang Il Ju, Seung Myung Lee, Ho Shin
Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, Korea. chosunns@hanmail.net
ABSTRACT
OBJECTIVE
The purpose of this retrospective clinical study was to describe a treatment for osteoporotic burst fracture in the setting of severe fractures involving fragmentation of the posterior wall and neural compromise with symptoms of cord compression.
METHODS
Indication for microscopic decompression and open kyphoplasty were intractable pain at the level of a known osteoporotic burst fractures involving neural compression or posterior wall fragmentation. A total of 18 patients (mean age, 74.6 years) with osteoporotic thoracolumbar burst fractures (3 males, 15 females) were included in this study. In all cases, microscopic decompressive laminectomy was followed by open kyphoplasty. Clinical outcome using VAS score and modified MacNab's grade was assessed on last clinical follow up (mean 6.7 months). Radiological analysis of sagittal alignment was assessed preoperatively, immediately postoperatively, and at final follow up.
RESULTS
One level augmentation and 1.8 level microscopic decompression were performed. Mean blood loss was less than 100 ml and there were no major complications. The mean pain score before operation and at final follow up was 7.2 and 1.9, respectively. Fourteen of 18 patients were graded as excellent and good according to the modified MacNab's criteria. Overall, 6.0 degrees of sagittal correction was obtained at final follow-up.
CONCLUSION
The combined thoracolumbar microscopic decompression and open kyphoplasty for severe osteoporotic fractures involving fragmentation of posterior wall and neural compromise provide direct visualization of neural elements, allowing safe cement augmentation of burst fractures. Decompressive surgery is possible and risk of epidural cement leakage is controlled intraoperatively.
Key Words: Osteoporosis; Burst fracture; Microscopic decompression; Kyphoplasty
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