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Chinese Journal of Orthopaedics ; (12): 760-767, 2022.
Artigo em Chinês | WPRIM | ID: wpr-957066

RESUMO

Objective:To investigate the clinical effects of anterior cage inserting for old thoracolumbar fractures with kyphosis through facet joint approach.Methods:A retrospective analysis was conducted on 32 patients with old thoracolumbar fractures complicated with kyphosis admitted from January 2018 to December 2019, including 14 males and 18 females. The average age was 47.3±13.1 years (range, 26-70 years). Thoracolumbar injury classification (TLICS) scores of patients with initial injury were 3-5 points, with an average of 4.0 points. After 6.3±2.9 months (range, 3-16 months) conservative treatment, intractable thorax and lumbar or back pain still existed. Anterior cage inserting via articular protrusion was performed in 15 cases and posterior screw placement and bone grafting fusion of injured vertebrae was performed in 17 cases. Preoperative sagittal Cobb angle was 27.0°±3.9° and 26.8°±4.6° in the anterior cage inserting group and fixation on fractured vertebrae group ( t=0.07, P=0.946), respectively. Sagittal vertical axis (SVA) was 4.2±1.8 cm and 4.1±2.1 cm ( t=0.14, P=0.887), respectively. The number of patients with ASIA impairment scale (AIS) of the anterior cage inserting group before surgery was 1 in grade C, 4 in grade D and 10 in grade E. However, the number of that in fixation on fractured vertebrae group was 2 in grade C, 2 in grade D and 13 in grade E. There was no significant difference between the two groups (χ 2=1.34, P=0.520). Results:All 32 patients were followed up for 12.2±3.1 months in the anterior cage inserting group and 12.0±3.3 months in fixation on fractured vertebrae group. The operative duration of the anterior cage inserting group and fixation on fractured vertebrae was 128±24.5 min and 123±40.6 min ( t=0.42, P=0.681). The intraoperative blood loss was 485±12.6 ml and 478±16.3 ml ( t=0.13, P=0.894), respectively. At the last follow-up, the improvement rate of VAS score of the anterior cage inserting group was higher than that of fixation on fractured vertebrae group (90%±10% vs. 75%±20%, t=3.17, P=0.004). The height of anterior margin of injured vertebra in the two groups was increased by 1.02±0.10 cm and 0.29±0.14 cm, the change rate of anterior cage inserting group was higher than that of fixation on fractured vertebrae group (67.1%±31.5% vs. 19.0%±14.9%, t=16.29, P<0.001). The sagittal Cobb angle of the anterior cage inserting group was significantly lower than that of fixation on fractured vertebrae group (7.4°±1.5° vs. 11.6°±2.5°, t=-5.85, P<0.001). The SVA of anterior cage inserting group was lower than that of fixation on fractured vertebrae group (1.1±0.6 cm vs. 1.6±0.6 cm, t=2.35, P=0.025). There were 15 patients in AIS grade E in the anterior cage inserting group, while 1 patient in grade D and 16 patients in grade E in fixation on fractured vertebrae group without significant difference between the two groups (χ 2=0.83, P=0.706). Conclusion:The treatment of old thoracolumbar fractures with kyphosis through facet joint approach and anterior fixation could achieve satisfied effects and could relieve pain symptoms of thoracolumbar and back, compared with posterior fusion for injured vertebra with nail and bone grafting.

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