Figure 1

(a) Grade 2 medial femoral bone marrow lesions. (b) Lateral femoral subchondral bone cyst at baseline. (c) Regression of lateral femoral subchondral bone cyst at follow-up.
(a) Grade 2 medial femoral bone marrow lesions. (b) Lateral femoral subchondral bone cyst at baseline. (c) Regression of lateral femoral subchondral bone cyst at follow-up.