Abstract:[Objective] To evaluate the short-term clinical outcomes of WaveflexTM spinal system in the treatment of lumbar disc herni- ation in of adolescent. [Methods] A retrospective study was conducted on 23 adolescent patients who received extended interlaminar fenes- trated discectomy combined with internal fixation with WaveflexTM spinal system for intervertebral disc herniation in our hospital from June 2017 to December 2020. The clinical and imaging data were evaluated. [Results] All the 23 patients were successfully operated on without serious complications, whereas with the operation time of (73.8±5.5) min, and the intraoperative blood loss of (131.7±22.4) ml, and followed up from 12 to 36 months. As time went by (preoperative, 6 months after surgery and the last follow-up), the VAS score for lumbago [(5.4± 1.0), (2.3±0.6), (1.5±0.6), P＜0.001], the VAS score for leg pain [(6.5±0.9), (2.4±0.6), (1.4±0.5), P＜0.001], and ODI scores [(59.0±4.8), (19.7±2.9), (13.0±3.0), P＜0.001] were significantly reduced. Radiographically, the height of the intervertebral disc [(8.6±1.6)mm, (10.4±1.4) mm, (10.1±1.5)mm, P＜0.001] , the lumbar lordotic angle [(18.3±8.6)°, (24.7±7.4)°, (23.9±6.4)°, P＜0.001] , and Pfirrmann grade of disc de- generation (I/II/III/IV/V) [(0/6/15/2/0), (1/10/9/3/0), (2/13/4/4/0), P=0.009] significantly improved postoperatively compared with those pre- operatively. [Conclusion] This waveflex dynamic fixation does achieve satisfactory clinical consequences in short term for adolescent lum- bar disc herniation, which might be beneficial to maintain the height of intervertebral space and delay the degeneration of intervertebral disc.