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[Clinical analysis of an interspinous stabilization system (wallis) in treating lumbar degenerative disease].

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[Clinical analysis of an interspinous stabilization system (wallis) in treating lumbar degenerative disease].

Zhongguo Gu Shang. 2012 Jun;25(6):463-7

Authors: Zhang ZJ, Pan B, Lu YS, Xu WG, Fu CD

OBJECTIVE: To evaluate clinical results of an interspinous stabilization system (Wallis) in treating lumbar degenerative disease in the short-term.
METHODS: From August 2007 to June 2010,48 patients with lumbar degenerative disease who were treated with interspinous stabilization system, the data of patients were analyzed retrospectively. In all of the 48 cases, there were 30 males and 18 females with an average age of 54.2 years (ranged, 40 to 68 years). Forty-four cases were with single segment and 4 cases with two segments. Of them, 4 cases were in L3, 4, 40 cases were in L4, 5, 4 cases were in L3, 4 and L4, 5. The radiographic data of patients were analyzed. Clinical effects were evaluated by Japanese Orthopedic Association (JOA) score system and low back pain disability questionnaire (Oswestry) and Odom method.
RESULTS: All the patients were followed up from 1 to 2 years with an average of 18 months. According to Odom’s criteria, 20 cases obtained excellent results, 24 good, 4 fair. JOA score increased from 12.4 +/- 2.7 preoperatively to 26.1 +/- 2.0 postoperatively (P < 0.01). Oswestry score decreased from 14.1 +/- 2.9 preoperatively to 5.5 +/- 1.8 postoperatively (P < 0.01). The posterior height of intervertebral space and height of nerve root canal increased compared with that of preperative height.
CONCLUSION: The treatment of lumbar degenerative disease with interspinous stabilization system can obtain satisfactory effects in the near future. It can retain dynamic stable of corresponding segments, expand volume of vertebral canal, and is safe and feasible.

PMID: 23016380 [PubMed – indexed for MEDLINE]

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