Background: Thoracic disc herniation accounts for only 0.15 to 1.8% of all spinal herniated discs. Usually present between the third and sixth decades with a female predilection. Objectives: To describe the surgical outcome and prognostic factors of post-decompression without fixation in CTDs. Patient and methods: from October 2016 to July 2019, a series of 9 patients with a CTD with demographic data, presentation, imaging findings, operative details, degree of spinal stenosis, duration of symptoms `and outcomes using ASIA scale or mFAC. Results: All patients presented with at least one sign of myelopathy. Simple laminectomy was performed, and followup was in 1st week and 6th month. In 1st week, according to ASIA grade improved in 4 (44, 4%), stationary in 3 (33.3%), deteriorated in 2 (22.2%) patients. According to ambulation, non-ambulatory in 3 (33.3%) and independent in 5 (66.6%) patients. In 6th month, according to ASIA grade improved in 5 (62.5%), stationary in 2 (25%), deteriorated in1 (12.5%) patient. According to ambulation, non-ambulatory in 1 (12.5%), independent in 3 (37.5%) and walker in 4 (50%) patients, one patient is missed in the 6th-month follow-up. Prognostic factors affected the surgical outcome, including the degree of spinal canal stenosis and duration of symptoms. Conclusions: Posterior decompression without instrumentation allowed us to decompress the compromised spinal cord. Results overall are good with the majority of patients improving at least 1 ASIA scale or mFAC. Better outcomes were affected with less degree of spinal stenosis and less duration of symptoms
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