Dose-response relationship between spino-pelvic alignment determined by sagittal modifiers and back pain-specific quality of life.
Ryoji TominagaNoriaki KuritaYoshiyuki KokubunTakuya NikaidoMiho SekiguchiKoji OtaniMasumi IwabuchiOsamu ShiradoShunichi FukuharaShin-Ichi KonnoPublished in: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society (2021)
PI-LL might be the most sensitive of the three modifiers of the SRS-Schwab classification for determining BP-specific QOL. Moreover, BP-specific QOL worsens rapidly when the compensatory mechanism against malalignment exceeds a critical value. Therefore, we suggest that traditional classifications and surgical strategies should be re-examined regarding the dose-dependent abnormalities of the SMs to develop a more reliable classification strategy.