Table 1.

Radiographic Classification of Degenerative Joint Disease.^a,b

Grade	Description
Knees
0	Normal
1	Doubtful narrowing of joint space and possible osteophytic lipping
2	Definite osteophytes and possible narrowing of joint space
3	Moderate multiple osteophytes, definite narrowing of joint space, some sclerosis, and possible deformity of bone ends
4	Large osteophytes, marked narrowing of joint space, severe sclerosis, and definite deformity of bone ends. Subchondral cysts may be present.
Hips
0	Normal
1	Possible narrowing of joint space medially and possible osteophytes around the femoral head
2	Definite narrowing of joint space inferiorly, definite osteophytes, and slight sclerosis
3	Marked narrowing of joint space, slight osteophytes, some sclerosis and cyst formation, and deformity of femoral head and acetabulum
4	Gross loss of joint space with sclerosis and cysts, marked deformity of femoral head and acetabulum, and large osteophytes

^aAdapted from the Council for International Organization of Medical Sciences, 1963.

^bAdapted from Rheumatic Diseases: Diagnosis and Management. Turek’s Orthopaedics: Principles and Their Application.⁸