#Dx 50 decompressor full#

Unlike other endoscopic approaches, UBE is not confined by the working tube or the working channel. It is performed through two separated small surgical wounds on either side of the spinous process.

#Dx 50 decompressor full#

Unilateral biportal endoscopic (UBE) decompression techniques is a percutaneous full endoscopic technique. Therefore, to minimize injury to the paraspinal muscles and the posterior stabilizing structures is the most critical concern for the long-term results ( 16). Other than the potential benefits of MI approach (smaller wounds, diminished local pain, less blood loss, less postoperative wound pain, and shorter hospital stays), biomechanical studies have demonstrated the importance of the posterior column, including the interspinous ligaments, the facet joints, and the capsules, in maintaining spinal stability ( 14, 15). With the advancement of surgical instruments and endoscopic technology, MI spine surgeries have evolved rapidly from mini-open to tubular or percutaneous endoscopic approaches. Considering the complications of spinal fusion and instrumentation, simple but adequate decompression is a more reasonable approach for patients who do not have the absolute indications for additional stabilization procedures ( 9).įor more than 20 years, minimally invasive (MI) spine surgeries have successfully treated patients with various lumbar spinal diseases ( 10- 13). Randomized controlled trials showed that fusion adds little value to decompression for DLCS ( 7, 8). This classical approach usually involves extensive soft tissue dissection, which would result in fatty degeneration, atrophy, and weakness of paraspinal muscles and lead to failed back surgery syndrome ( 5, 6). Wide laminectomy with or without concomitant fusion procedures were considered as the standard surgical procedures for decades ( 2- 4). Accepted for publication Mar 10, 2020.ĭegenerative lumbar canal stenosis (DLCS) is the most common indication for spinal surgery in the elderly population ( 1). Keywords: Minimally invasive surgery biportal endoscopic spine surgery lumbar canal stenosis The soft tissue and facet joint destruction are minimized therefore, it is possible to avoid spinal fusion as well as to preserve the segmental stability. Complications included 4 dural tears, 1 transient motor weakness, 1 inadequate decompression, and 1 epidural hematoma.Ĭonclusions: With UBE techniques, decompression for DLCS can be performed safely and effectively. The percentage of facet joint preservation was 84.2% on the approach side and 92.9% on the contralateral side. MRI before and after the operation showed the cross-sectional dural area (CSDA) was significantly increased from 71.4☓6.5 to 177.3±59.2 mm 2, corresponding to a 201.9%☑88.0% increase. The average hospital stay was 3.6☒.4 days. Modified Macnab criteria were excellent in 47 patients (58.0%), good in 29 (35.8%), fair in 5 (6.2%). The mean JOA score and ODI was significantly improved from 13.3☗.9 to 25.3±5.0 and from 54.6☑6.9 to 14.6☑2.6, respectively. Results: At the final follow-up, the mean VAS for low back pain was improved from 4.3☓.0 to 1.2☑.0 and the VAS for leg symptoms was improved from 7.3☒.2 to 0.9☐.7.

Therefore, we don't have formal ethical information for this study, and it is not mandatory in our hospital. This is a retrospective study from chart review and image analysis.

Bilateral decompression via unilateral laminotomy was performed from the side on patients with more severe neurological symptoms. Sixty-nine had pure canal stenosis and 12 patients had associated spondylolisthesis. They were 38 males and 43 females with an average age of 70.2. Methods: Clinical and radiographic data of 81 consecutive patients of DLCS treated between July 2018 and Feb 2019 using UBE techniques were reviewed. Decompression can be performed in a clear and magnified surgical field with proper control of normal saline inflow and outflow. Background: Unilateral biportal endoscopic (UBE) decompression is a minimally invasive (MI) approach to treat degenerative lumbar canal stenosis (DLCS).