(a) Radiograph of a knee joint 3 years following MFX of the medial femoral condyle The arrow indicates the formation of an intralesional osteophyte (50-year-old patient). (b) MRI image (PD fat sat sequence) 24 months after MFX of the lateral femoral condyle (32-year-old patient). Excessive bone formation is evident within the former defect area (arrows delineate the defect borders).

Figure 2: Clinical cases of intralesional osteophyte formation following MFX.