How obvious is it? You could just not do it if it's not going to be too visible - like with long pants. There are ways to do it that involve strapping your leg up behind you and wearing a peg, but it's not comfortable and you can get hurt.
Disclaimer : This post written by a Grumpy Old Man
Actually in the pipes:
- Remaking Ser Loras doublet.
- Luke Skywalker, A New Hope
- Wind Waker starter costume in swim material
Eventually: Paul from Dune, Faramir, Harry Sullivan