Patients
JIA
DISEASE
First, we obtained an ethical committee approval from the faculty of Medicine Al-Azhar University (0000016) and then we recruited JIA patients (no condition for disease duration) diagnosed after ILAR criteria [A total of 198 JIA cases were enrolled in the study. Out of them, 87 cases were excluded either due to the presence of one of the exclusion criteria or due to the absence of knee involvement, yielding 111 cases fulfilling the inclusion criteria for this study (see the flow chart in Fig. Flow chart of the included cases in the study