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  • Title: Therapeutic effects of full endoscopic spine surgery via transforaminal approach in elderly patients with lumbar spinal stenosis: A retrospective clinical study.
    Author: Yin G, Huang B, Wang C, Liu SQ.
    Journal: Acta Orthop Traumatol Turc; 2021 Mar; 55(2):166-170. PubMed ID: 33847580.
    Abstract:
    OBJECTIVE: This study aimed to investigate the therapeutic effects of full endoscopic spine surgery on clinical and radiological outcomes in elderly patients over 70 years with lumbar spinal stenosis, without any obvious segmental instability. METHODS: A total of 47 patients (27 males, 20 females; the mean age=74.23±5.16) above 70 years who underwent a transforaminal percutaneous endoscopic decompression with the diagnosis of lumbar spinal stenosis, were included in this retrospective study. The mean follow-up was 26±2.97 months. The clinical efficacy of the surgical procedure was assessed by the Oswestry disability index (ODI) and the visual analog scale (VAS) of the leg and lower back at 1 week, 3 months, and 1 year postoperatively, and at the final follow-up examination. Modified MacNab criteria was also performed to assess the clinical efficiency of surgery at the final follow-up. RESULTS: An excellent outcome as per modified MacNab criteria was obtained in 9 patients (19.1%), a good outcome in 33 patients (70.2%), a fair outcome in 3 patients (6.4%), and poor results in 2 patients (4.3%). The mean ODI score significantly improved from 71.29±5.69 preoperatively to 32.05±10.71 at postoperative 1 week, 30.27±9.89 at 3 months, 27.23±8.47 at 1 year, and 23.11±9.97 at the final follow-up (p<0.05 for each evaluation point). The mean VAS score of the leg and lower back significantly decreased from 6.10±0.96 and 5.71±1.13 preoperatively to 1.69±0.96, 2.24±1.01 at postoperative 1 week, 1.69±0.84, 2.45±0.87 at 3 months, 1.71±0.81, 2.38±0.79 at 1 year, and 1.71±0.92, 2.48±0.67 at the final follow-up, respectively (p<0.05 for each evaluation term). Postoperative computed tomography or magnetic resonance imaging showed adequate decompression of the central or lateral recess and removal of combined herniated discs. CONCLUSION: The results of our preliminary study have demonstrated that full endoscopic spine surgery is a safe and efficient technique for the therapy of neurogenic claudication and radiculopathy in elderly patients with lumbar spinal stenosis. LEVEL OF EVIDENCE: Level IV, Therapeutic Study.
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