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[Application of Bioflex dynamic stabilization system in treating multi-segment lumbar degenerative disease]

OBJECTIVE: To explore the value of application of Bioflex dynamic stabilization system in treating multi-segment lumbar degenerative disease. METHODS: Clinical datas of 13 patients with multi-segment lumbar degenerative disease (8 males and 5 females,ranging in age from 51 to 72 year with an average of 65.0) were retrospectively analyzed between April 2008 and May 2009. The involved area included L3-S1 in 7 cases, L2-S1 in 3 cases, L3-L5 in 1 cases, L4-S1 in 2 cases. All patients underwent decompression, dynamic stabilization with Bioflex system, according to the severity of degenerative disc with/without interbody fusion. The clinical effects were evaluated by VAS, ODI. ROM and fusion segments were also observed. RESULTS: The mean follow up period was 19.5 months (from 12 to 26 months). The mean operative time was 183.4 min (from 90 to 240 min) and the mean volume of blood loss was 610.2 ml (from 400 to 1 220 ml). The mean VAS score was 7.8 +/- 1.3 preoperatively, 2.3 +/- 0.9 postoperatively and 2.1 +/- 0.8 at the last follow up. The average ODI was (60.50 +/- 4.40)% preoperatively, (17.80 +/- 2.10)% postoperatively and (16.20 + 2.40)% at the last follow up. The VAS and ODI significant improved in postoperatively (P < 0.05), and there was no statistical difference between postoperative and last follow up (P > 0.05). ROM of whole lumbar and non-fused segment showed obviously decreased and adjacent segment showed insignificant increased. The fusion rate of interbody fusion level was 95.0% (19/20). CONCLUSION: The preliminary clinical results show the Bioflex system combined with intebody fusion is a safe and effective technique in treating multi-segment lumbar degenerative disease

Keywords : Aged,blood,China,Female,Humans,Internal Fixators,Intervertebral Disc Displacement,Lumbar Vertebrae,Male,methods,Middle Aged,Retrospective Studies,Spinal Fusion,Spinal Stenosis,surgery,Time,, Bioflex,Dynamic,Stabilization,System, permanent nerve block for back pain

Date of Publication : 2011 Apr

Authors : Li DW;Ma YZ;Hu M;Luo ZP;Luo XB;

Organisation : Department of Orthopaedics, the 309th Hospital of the PLA, Beijing 100091, China

Journal of Publication : Zhongguo Gu Shang

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21604521

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