Figure 7a: (a) AP radiograph of the distal femur and knee, (b) transverse CT image, and (c) fat-suppressed T2-weighted spin-echo (2000/40) MR image obtained through the distal femur in a 63-year-old man. Heterogeneous osteosclerosis of the cancellous bone is clearly depicted on b (arrow). Heterogeneous high signal intensity is visible in the femur epiphysis, while signal intensity of the patella is normal on c.