Summary: Pathological changes in the hip joint were revealed by autopsy examination of 23 young beef bulls showing lameness of the hind limbs before 18 months of age. Abnormalities were confined to the hip joint and were bilateral in 19 of the animals. Neither mycoplasma nor significant bacteria were isolated from the synovial fluid or synovial membranes of 16 joints that were investigated.
The changes in the hips were those of degenerative joint disease, closely resembling osteoarthritis in man, and were considered to be secondary to dysplasia of the acetabulum.
(C) 1973 Royal College of Pathologists of Australasia