Comparison of transforaminal endoscopic lumbar foraminotomy (TELF) in patients with degenerative scoliosis and patients with normal alignment

Objectives Transforaminal endoscopic lumbar foraminotomy (TELF) is a well-described method of treating foraminal stenosis. However, there is little literature examining the usage of TELF to treat foraminal stenosis in patients with degenerative scoliosis. TELF is an attractive option for such patients as it results in lesser blood loss, shorter recovery time, and lower infection rates as compared to fusion surgery. However, TELF neither corrects the deformity nor alters the natural history of the disease. Therefore, the outcomes of TELF in patients with degenerative scoliosis may be worse than those without deformities. This study aims to compare the outcomes of TELF in these two groups of patients. Material and Methods This is a retrospective study of 19 patients who underwent TELF from July 2012 to April 2015. Eight patients had degenerative scoliosis, and 11 were without scoliosis. Visual analog scale and Oswestry disability index (ODI) scores were collected at 3 months postsurgery. Patient outcomes were graded as excellent, good, fair, and poor using a modified MacNab’s criteria. Results Both groups had significant improvements in back pain, leg pain, and ODI scores postoperatively. There were no differences between the two groups when comparing the preoperative and postoperative back pain, leg pain, and ODI scores. The majority of patients rated their outcomes as excellent or good. Conclusion The short-term outcomes of TELF in patients with degenerative scoliosis are comparable to those without scoliosis. Improvements in back and leg pain after surgery are expected. We recommend it as a palliative treatment for patients who are unable to undergo major surgery.