It has for its framework a fibro-cartilage, irregular in shape, thick, nearly prismatic at its base, and thin anteriorly where it is covered by the conjunctiva; behind, it is loosely attached to a fatty cushion.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
The inner surface is united more or less closely to the muscular or underlying tissue by a layer of fibro-fatty tissue.
"Common Diseases of Farm Animals"
R. A. Craig, D. V. M.
The acetabulum, never having been occupied by the head of the femur, is imperfectly developed; it remains flat and shallow, is partly filled with fibro-fatty tissue derived from the synovial membrane, and is always too small for the head of the femur.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson