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Table 2 Frequency of bone marrow lesions (BMLs) in the patellofemoral joint stratified by the presence of MRI-detected mediopatellar plica

From: Prevalence of MRI-detected mediopatellar plica in subjects with knee pain and the association with MRI-detected patellofemoral cartilage damage and bone marrow lesions: data from the Joints On Glucosamine study

Compartment Total Without mediopatellar plica With mediopatellar plica
All types Type A Type B Type C
(N = 342) (N = 179) N = 163 N = 76 N = 69 N = 18
Medial patella 96 (28.1%) 53 (29.6%) 43 (26.4%) 13 (17.1%) 23 (33.3%) 7 (38.9%)
Lateral patella 101 (29.5%) 58 (32.4%) 43 (26.4%) 16 (21.1%) 20 (29.0%) 7 (38.9%)
Anterior medial femur 60 (17.5%) 30 (16.8%) 30 (18.4%) 14 (18.4%) 12 (17.4%) 4 (22.2%)
Anterior lateral femur 67 (19.6%) 34 (19.0%) 33 (20.3%) 10 (13.2%) 17 (24.6%) 6 (33.3%)