Table 2: Cartilage pathology (Gr = group; MC = medial condyle; LC = lateral condyle; PF = patellar facies; MUL = multiple locations; N/A = not applicable/available as Gr 3 did not receive any arthroscopic surgery).

Group 1Group 2Group 3

Number (patients)202020
Kellgren-Lawrence classification Gr 2-3Gr 2 = 11Gr 2 = 11Gr 2 = 11
Gr 3 = 9Gr 3 = 9Gr 3 = 9
Intraoperative locationMC = 9MC = 8N/A
LC = 1LC = 1
PF = 3PF = 3
MUL = 7MUL = 8
ICRS classificationIII = 12, IV = 8III = 10, IV = 10N/A
Size of lesion (cm)2.5 × 2.72.5 × 2.6N/A