ABU AWWAD AHMED, RADU PREJBEANU, DINU VERMESAN, IOAN BRANEA, BOGDAN DELEANU, SORIN FLORESCU, CRISTINA VLAD-DALIBORCA BLOOD LOSS OF PEDICLE SUBTRACTION OSTEOTOMY FOR SAGITTAL IMBALANCE SPINAL DEFORMITY Pedicle subtraction osteotomies (PSO) have been used in the treatment of multiple spinal conditions involving a fixed sagittal imbalance. It is a complex, extensive surgery most often performed in the revision settings. The aim of our study is to review the major complications of this surgical technique with a focus on blood loss. Twenty patients were included, treated using PSO for sagittal imbalance, out of 255 corrective surgeries. Of the 12 female patients included in the study, the mean age was 64.33. Of the 8 male patients included in the study, the mean age was 51.85. For female patients, the mean blood loss was 2122.5 mL in comparison with male patients, with mean blood loss 1737.5 mL. The female patients had an operating time of 357.25 minutes in comparasion with male patients with an 328.5 minute operating time. Eight (5 female and 3 male) had postoperative neurological deficits and 6 (5 female and 1 male) had pseudarthrosis of adjacent levels.
Keywords: pedicle subtraction osteotomy; spinal deformity; corrective surgery; blood loss