With the thigh bent on the flank, the leg on the thigh, and the shank on the leg, and all at once wedged into the passage, delivery is practically impossible.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Another of the same kind is the solid shank bone of the ox, which consists of two bones united into one, but which are still found apart in the early fetus.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
The bent neck may sometimes be sufficiently straightened for extraction by cutting across the muscles on the side to which it is turned, and the bent knees by cutting the cords on the back of the shank bones just below the knees.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler