Characteristics of the sagittal spinal balance in the asymptomatic elderly Chinese population

摘要

Abstract Purpose To investigate the normal values of the sagittal spinal parameters and analyze the distribution of the global spinal profiles in a Chinese population with age over 75.Methods Two hundred and twelve sets of the whole spine lateral radiographs were obtained from a database of an asymptomatic elderly population. Global and regional spinal parameters were measured. Sagittal profiles were determined according to the Roussouly classification compared with previous studies involving different populations.Results A total of 102 elderly subjects (≥?75?years) were enrolled with an average age of 79.24?±?3.53?years. The mean values of the spinopelvic parameters were 42.89?±?11.64° for TK, 13.84?±?10.78° for TLK, 44.48?±?12.88° for LL, 44.76?±?9.84° for PI, 17.19?±?8.08° for PT, 28.35?±?7.94° for SS, 3.47?±?3.56?cm for SVA, 14.75?±?7.85° for TPA, -0.27?±?11.95° for PI-LL, respectively. Subjects?≥?75?years were found to have significantly smaller LL and SS, but greater TLK, PT, SVA, TPA, and PI-LL than those 60–74?years (p?