Abstract
Objective. To analyze the patterns of occurrence of postoperative recurrent vertebral compression fractures (RVCF) depending on the location of the primary fracture after puncture vertebroplasty. Methods. 520 case histories of patients with osteoporotic fractures of the thoracic and lumbar spine of various locations were analyzed. The total number of treated vertebral bodies was 1,458 (thoracic 596 — 40.88 %, lumbar 862 — 59.12 %). Most often, compression fractures of the spine occurred in the thoracolumbar junction (784 — 53.77 %). RVCF was diagnosed in 64 (12.31 %) people (95 % CI: 9.94–14.68 %) during follow-up examinations, after 1, 3, 6 or 12 months. since the operation. The study was carried out by 3 methods of forecasting: assessment of conditional probabilities, study of the significance of a primary fracture as a predictor of repeated fracture in a specific vertebra, analysis of associative rules and relationships Results. According to the 1st method, all conditional probabilities do not exceed 0.4 and the highest of them are the probabilities LI and LIV RVCF (0.39) with a primary ThVI fracture, and the probability of ThVIII RVCF (0.38) with a ThV primary fracture. Method II found only two regularities that allow an interpretation that corresponds to the purpose of our research. The third method revealed the associative rules and connections of the primary fracture of ThV with RVCF LI, ThXII; according to ThVI with RVCF LI, LII; in the case of ThVIII with RVCF LI, ThXII; ThX fracture with ThX, ThXI, ThXII, LII RVCF; under ThXI conditions with ThV, ThVII, ThVIII, ThIX, ThX, ThXII RVCF; for ThX with RVCF ThIX, ThXI, ThXII, LII; ThX fracture with ThX, ThXI, ThXII, LII RVCF. Conclusions. Prediction of repeated osteoporotic fractures is an important and topical problem of todayʼs vertebrology. Our study shows the most vivid patterns that are characteristic of the general sample of patients, namely: with a primary fracture of ThXI — a new deformation of ThVIII is possible; in the case of ThVII — new fractures of ThIX, ThXII, LI; for ThXII — injuries of ThXI; primary LI — new ThXII, LIV, LV.
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