Abstract
Multilevel ossification of posterior longitudinal ligament (OPLL) at thoracic spine can be simultaneously symptomatic. Different approaches for thoracic decompression have been reported, among which circumferential decompression (CD) seems promising but is invasive, so methods to find approaches indicating levels for CD are also important. This study aimed to introduce a CD-based surgical strategy for multilevel thoracic OPLL and describe its clinical outcomes. A retrospective clinical study was used. A cohort of 26 patients were recruited, whose average age was 51.2±9.1 years old. A modified Japanese Orthopedic Association (JOA) scale for thoracic spine was used to evaluate neurologic status, and final recovery rates were assessed according to Hirabayashi system. Posterior decompression was initially performed for all compressive levels, whereas CD levels were decided through combined modalities, of which intraoperative ultrasound was an important determinant. All patients were regularly followed for more than 2 years. The average operative duration and blood loss were 279.3±54.8 minutes and 2257.7±1443.9 mL, respectively. There were 17 patients (65.4%) who achieved instant improvement and 9 (34.6%) neurologically deteriorated...Continue Reading
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