Personalised modified osteotomy using computer-aided design–rapid prototyping to correct thoracic deformities

摘要: The correction of severe thoracic deformities is challenging. However, the usual imaging modalities are not sufficient for performing surgery. Our objective was to describe procedure and results posterior modified wedge osteotomy aided by techniques computer-aided design–rapid prototyping (CAD-RP) correct deformities. Twenty-one patients with (eight males; 13 females) formed study group. All underwent computed tomography (CT) scanning CAD-RP, a model navigation templates pedicles were created each patient used analyse spinal serve as anatomical reference. Aided these models, personalised combining eggshell technique vertebral column resection performed. Using CAD-RP improved safety accuracy surgery screw placement in 21 whom 41 vertebrae removed 216 pedicle screws placed. average operation time 260 (200–420) min, an blood loss 1,900 ml (range 800–3560 ml). percentage deformity 56.3% (from 72.1° 31.5°) coronal plane 60.4% 81.6° 32.3°) sagittal plane. No had serious complications or implant failure. Personalised single-stage effective treating RP models have significant benefits surgical treatment complex