BACKGROUND: Semirigid posterior stabilization is an alternative, avoiding arthrodesis in operated segments. However, this results in the need for dynamic stabilization to allow a stable feature function. METHODS: We conducted a prospective longitudinal self-reported interventional study. We included 46 patients with dynamic Dallostype interspinous stabilization between 1997 and 2004. A 4-year follow-up analysis was performed using clinical and radiographic studies, preoperatively and 4 years later evaluating lumbar disability, pain, disc height, disc angle (neutral, flexion, and extension). Descriptive statistics were used along with Wilcoxon signed range test. Statistical significance was accepted when p < 0.05. RESULTS: Of 46 patients, 39 completed a 4-year follow-up. Included in the study were nine females and 30 males with an average age of 30.74 years. Affected levels were L4 and L5 (21 patients); L5/S1 (17 patients) and L3/L4 (one patient). An improvement was reported of 80.3% according to the Oswestry scale (p = 0.0001). Preoperative pain decreased 6.8 points VAS. Disc height decreased 0.1 mm on average without significance. Disc angle (neutral) increased 1.13 degrees without statistical difference. For flexion the increase was 2.641 degrees (p = 0.0002), and extension decreased 0.817 degrees on average without statistical significance. Range of mobility decreased 3.416 degrees (p = 0.004). CONCLUSIONS: Interspinous ligamentoplasty improves segmental stability, allowing mobility within normal ranges and preserving disc height at 4 years of follow-up, as well as offering greater dynamic stability. Successful clinical improvement was demonstrated Keywords : Adolescent,Adult,analysis,Arthrodesis,Diskectomy,Female,Follow-Up Studies,Humans,Lumbar Vertebrae,Male,methods,Middle Aged,Pain,Patients,Prospective Studies,surgery,Time Factors,Young Adult,, Interspinous,Stabilization,Lumbar,Discectomy, back pain treatment radio frequency
Date of Publication : 2010 Nov
Authors : Rosales-Olivares LM;pizar-Aguirre A;Miramontes-Martinez V;Zarate-Kalfopulus B;Reyes-Sanchez A;
Organisation : Servicio de Cirugia de Columna Vertebral, Instituto Nacional de Rehabilitacion, Secretaria de Salud, Mexico, D. F., Mexico
Journal of Publication : Cir Cir
Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21214985
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