Table 1: GSUS Scanning planes for the knee (maximal score 12).

Nr. Plane Grade 0 Grade 1 Grade 2 Grade 3
1. Suprapatellar longitudinal normal JCD parallel to the femur bone JCD straight JCD convex
2. Medial longitudinal of femuro-tibial joint normal JCD parallel to bone no distension over the joint space JCD parallel to bone distension above the joint space JCD convex above the joint space
3. Lateral longitudinal of femuro-tibial joint normal JCD parallel to bone no distension over the joint space JCD parallel to bone distension above the joint space JCD convex above the joint space
4. Posterior longitudinal normal slight JCD over the jointspace JCD parallel to bone, distension over the joint space JCD convex above the joint space