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Effectiveness of Transpedicular Dynamic Stabilization in Treating Discogenic Low Back Pain
Lei Luo1, Chengmin Zhang1, Qiang Zhou1
1Department of Orthopedic Surgery, Southwest Hospital, The Army (Third Military) Medical University, Chongqing, China.
Purpose:
To assess clinical outcomes after dynamic stabilization in discogenic low back pain.
Methods:
From April 2012 to January 2015, 23 patients with discogenic low back pain were treated with dynamic stabilization via the Wiltse approach. Main clinical assessments included visual analog scale, Oswestry Disability Index, and complications. Radiographs were evaluated for lumbar range of motion and intervertebral height. The Woodend classification was determined by magnetic resonance imaging.
Results:
There were 23 cases evaluated with a mean follow-up time of 39 months. At last follow-up, visual analog scale and Oswestry Disability Index scores improved significantly compared with preoperatively (P < 0.05). At the stabilized segments, the height of intervertebral discs was increased significantly after surgery (P < 0.05). At last follow-up, the height was reduced to the preoperative level. At the operated segment, 47.4% of the flexion/extension range of motion was retained. Six discs showed rehydration with 1 grade improvement on the Woodend classification.
Conclusions:
Dynamic stabilization was a safe and effective treatment in carefully selected groups of patients with discogenic low back pain and promoted disc regeneration to some extent.
