Figure 2.

Detailed assessment of normality and pathology on the radiographs in ‘E’ and ‘E/R’ joints. Scores represent the proportion of (remaining) normal structure for each domain. (A,B) Changes in subchondral bone. Areas of osteolytic activity are marked and calculated proportions of normal bone remaining are presented: score subchondral bone = 100 – proportion of abnormal osteolytic bone. (C–F) Changes in subchondral bone plate (row 2) and in joint space (row 3); row 2: subchondral bone plates represented by white line; row 3: joint space was recognised as a radiotranslucent area bordered with two subchondral plates, which is not the case in 3C and D. Proportions of subchondral bone plate and of joint space still identifiable are presented in the figures. Scores presented in the figures are proportions of normal subchondral bone plate and of normal joint space.