- High-grade MRI bone oedema is common within the surgical field in rheumatoid arthritis patients undergoing joint replacement and is associated with osteitis in subchondral bone. McQueen, F.M., Gao, A., Ostergaard, M., King, A., Shalley, G., Robinson, E., Doyle, A., Clark, B., Dalbeth, N. Ann. Rheum. Dis. (2007)