Letter to the Editor concerning “Global tilt: a single parameter incorporating spinal and pelvic sagittal parameters and least affected by patient positioning” by Obeid I et al. [Eur Spine J; (2016) 25: 3644–3649]

[摘要] We read with great interest the recent article by Obeid et al. [1], in which the authors described a novel spinopelvic parameter, global tilt (GT), to assess global sagittal alignment. It is defned as the angle between a line from the center of the superior sacral end plate to the center of the C7 vertebral body and a line from the femoral heads to the center of the superior sacral end plate, which could integrate both trunk inclination (C7 vertical tilt, C7VT) and pelvic retroversion (pelvic tilt, PT) simultaneously. It has been reported that GT is immune to the postural compensation despite varying extent of pelvic retroversion and knee fexion.