Cows heavy with calf are sometimes affected with a form of paraplegia, which usually attacks them from about a month to a few days before calving.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
When the paralysis affects both sides of the body, posterior to a point, it is further designated by the name paraplegia.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
When the quadriceps is overcome by a contraction of the hamstrings, as in spastic paraplegia, the knee is fixed in the flexed position and the child is unable to walk.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson