[Brian Kopp DPM]

Varicose veins.

Not likely. Look at the area just above his sock and extending about six inches up his leg:

That regular checkered pattern of dark areas is typical of a meshed split thickness skin graft.

[Daffynition]

But what is that *bumpiness* near the knees?

[COUNTrecount]

Another shorts shot. There are very few of these.