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AIM:To examine a series of surgically treated spinal arachnoid cysts in light of the literature. MATERIAL and METHODS:This was a retrospective study of patients treated in the Istanbul Umraniye Training and Research Hospital Neurosurgery Clinic. A total of 18 patients with spinal arachnoid cysts underwent surgical treatment between January 2012 and December 2019. All patients were assessed before and after surgery for muscle strength, pain, sensory changes, and bowelbladder symptoms. All patients underwent magnetic resonance imaging and computed tomography for diagnosis and treatment. RESULTS: Among the 18 patients, 8 were men and 10 were women, with a mean age of 43.7 (25-66) years. Congenital conditions were discovered in 15 of the patients, 2 after lumbar drainage and 1 after spinal anesthesia. Intradural extramedullary and intraextradural cysts were found in 17 patients and 1 patient, respectively. The cyst was smaller than level 3 in 14 patients and greater than level 3 in 4 patients. Cyst excision and cyst fenestration were performed in 11 and 7 patients, respectively. Cyst excision was performed in four of the patients who underwent cyst fenestration because their complaints did not improve.CONCLUSION: Surgery should be considered in patients with symptomatic spinal arachnoid cysts. Fenestration may be a suitable alternative, especially if magnetic resonance imaging reveals no intracystic adhesion or trabeculation. Residual and recurrence rates are high in patients with a history of intradural intervention, adhesions, or trabeculation. When there is trabeculation, the best option is cyst removal.

AIM: To evaluate the clinical and economic outcomes of the adoption of the enhanced recovery after spine surgery (ERSS) program in patients undergoing spine instrumentation. MATERIAL and METHODS: This study described the introduction of the ERSS program, and we compared 86 consecutive patients who participated in ERSS with a retrospective cohort of 88 patients who underwent the same surgery before the implementation of this program. Groups were compared in terms of age, sex, body mass index (BMI), American Society of Anesthesiologist (ASA) physical scores, operative time, comorbidities, intraoperative blood loss, blood transfusion rate, first oral intake, time of first mobilization, length of hospital stay, preoperative and postoperative pain scores using a numeric pain rating scale, 30-day readmission and complication rates, and total cost. RESULTS: Groups were similar in terms of age, sex, BMI, ASA scores, and comorbidities. Intraoperative blood loss, blood transfusion rate, and length of hospital stay were lower in the ERSS group. First oral intake and first mobilization occurred earlier in the ERSS group. Postoperative pain scores were significantly lower in the ERSS group. Operative time, readmissions, or complications at 30 days did not statistically differ between the two groups. The ERSS group was found to be significantly cost effective. CONCLUSION: ERSS is feasible, comprehensive, and cost effective for spine instrumentation with better perioperative outcomes.

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