• Qi Wang, Jun Liu, Ying Shi, Yu Chen, Hailong Yu, Junxiong Ma, Weijian Ren, Huifeng Yang, Hongwei Wang, and Liangbi Xiang.
• Department of Orthopedics, The General Hospital of Shenyang Military Commanding Area, No 83, Wenhua Road, 110840, Shenyang, China.
• Eur Spine J. 2016 May 1; 25 (5): 1409-1416.

PurposeTo determine the safety and short-term curative effects of internal fixation using a dynamic neutralization system (Dynesys) for multi-segmental lumbar disc herniation (ms-LDH) with the control group treated by posterior lumbar interbody fusion (PLIF).MethodsForty-five patients with ms-LDH were selected as study group treated with Dynesys and 40 patients as control group with PLIF. The surgical efficacy was evaluated by comparing the visual analogue scale (VAS) scores, the Oswestry Disability Index (ODI) scores and the ROMs of the adjacent segment before and after surgery. The postoperative complications related to the implants were identified.ResultsAll patients were followed up for an average duration of over 30 months. Dynesys stabilization resulted in significantly higher preservation of motion at the index level (p < 0.001), and significantly less (p < 0.05) hypermobility at the adjacent segments. VAS for back and leg pain and ODI improved significantly (p < 0.05) with both the methods, but there was no significant difference between the groups.ConclusionsThe non-fusion fixation system Dynesys is safe and effective regarding short-term curative effects for the treatment of ms-LDH.

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