lumbosacral angle

lum·bo·sa·cral an·gle

the angle between the long axis of the lumbar part of the vertebral column and that of the sacrum.
References in periodicals archive ?
Outside of this neutral zone, we modeled passive properties to vary linearly with the lumbosacral angle using stiffness coefficients reported by White and Panjabi: 1.
The lumbosacral angle doubled to 64[degrees] compared to our closest extant quadripedal cousin, the chimpanzee (Abitol, 1987).