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  • Title: [Surgical treatment of thoracolumbar fractures using pedicle screws fixation at the level of the fracture: results for following up more than 2 years].
    Author: Zeng ZY, Zhang JQ, Jin CY, Wang B, Jiang CY, Wu P, Yan WF.
    Journal: Zhongguo Gu Shang; 2012 Feb; 25(2):128-32. PubMed ID: 22577717.
    Abstract:
    OBJECTIVE: To explore clinical efficacy of thoracolumbar fractures fixation with pedicle screws fixation at the level of the fracture and monosegment bone graft simultaneously. METHODS: Retrospective analysis of 32 patients with thoracolumbar fractures underwent surgical procedure of pedicle screws fixation at the level of the fracture and monosegment bone graft simultaneously from January 2006 to December 2008. All the patients were followed up more than two years. There were 25 males and 7 females with an average age of 39.1 years (ranged, 25 to 60 years). According to the AO classification, type A1.3 was in 5 cases, type A3.1 in 17, type A3.3 in 8, type C1.1 in 1, and type C1.3 in 1. Load scoring was from 4 to 7 points with average of 5.8 points. The spinal cord function according to Frankel grade, grade A was in 2 cases, grade B in 2, grade C in 5, grade D in 9 and grade E in 14. Cobb angle, the height of anterior border of vertebral body, spinal canal stenosis rate were observed by X-ray films. Meanwhile, pain and work ability were evaluated by Denis scale. RESULTS: All the patients were followed-up from 30 to 48 months (averaged, 39.2 months). No internal fixation loosening or breakage were found. Three cases occurred with floating callus and other obtained well bone fusion. Compared with preoperation, Cobb angle, the height of anterior border of vertebral body, and spinal canal stenosis rate improved obviously (P < 0.05); but Cobb angle had lost partially at the last follow-up (P > 0.05). Meanwhile, anterosuperior part of vertebral body of 25 cases existed cavity phenomenon. The nerve function of all cases recovered for 1-2 grades, except for 2 cases without change whose spinal cord function was degree A preoperatively. According to Denis scale, lower back pain scoring, P1 was in 22 cases, P2 in 7, P3 in 3; state of work scoring, W1 was in 18 cases, W2 in 8, W3 in 3, W5 in 3. CONCLUSION: It can help to correct the kyphosis and improve low back pain in thoracolumbar fractures through pedicle screws fixation at the level of the fracture and monosegment bone graft simultaneously, but it can not improve the cavity phenomenon of injured vertebral body and avoid partially lost of Cobb angle.
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