"grade 1: normal CT scan with no degenerative findings"
"grade 2: mild joint space narrowing noted, small osteophytes"
"grade 3: narrowing of joint space, sclerosis and moderate-size osteophytes"
"grade 4: severe osteoarthritic changes, large osteophytes, narrowing of joint space, sclerosis and subchondral cysts 3"
"grade 3: narrowing of joint space, sclerosis and moderate-size osteophytes"
"grade 4: severe osteoarthritic changes, large osteophytes, narrowing of joint space, sclerosis and subchondral cysts 3"