Skip to main content

Table 1 The Kellgren-Lawrence radiographic osteoarthritis grading scale

From: Infrapatellar fat pad area on knee MRI: does it correlate with the extent of knee osteoarthritis?

Kellgren-Lawrence osteoarthritis grading scale Description
Mild OA -Definite osteophites and possible narrowing of the joint space
Moderate OA -Moderate multiple osteophites, definite joint space narrowing, and subchondral sclerosis
Severe OA -Large osteophites, marked joint space narrowing, severe sclerosis, and bone deformity