Journal of Bone and Joint Surgery, 1974;56:313-321.
© 1974 by The Journal of Bone and Joint Surgery, Inc
Quantitative Studies of Human Subchondral Cancellous Bone
ITS RELATIONSHIP TO THE STATE OF ITS OVERLYING CARTILAGE
JAMES W. PUGH PH.D.1,
ERIC L. RADIN M.D.1, and
ROBERT M. ROSE SC.D.1
1 From the Department of Metallurgy and Materials Science, Massachusetts Institute of Technology, Cambridge, and the Department of Orthopaedic Surgery, Harvard Medical School at the Children's Hospital Medical Center, Boston
Changes in the spatial arrangement of the trabeculae (rather than the gross density of the bone) are shown to correlate with the observed increase in subchondral bone stiffening associated with loss of cartilage mucopolysaccharide. In fifteen cadavera, with no histories of degenerative joint disease and exhibiting no gross bone and cartilage changes indicative of osteoarthritis, the stiffening of 38 per cent from a normal to an early arthritic condition was accompanied by a trabecular contiguity change from 0.7 to 0.8. Since the limits on the contiguity ratio in trabecular bone are one-half and one, and the experimentally observed range is 0.6 to 0.9, this increase in contiguity ratio is quite striking.