How can I safely upgrade to robot limbs in Kenshi?

I want to remove one of my legs so I can make it more versatile with various attachments, unfortunately my current fleshy leg are taking up that limb spot. I’m still rather early game but I’ve spent some time training my guy up in athleticism and some sneak/lock-picking and I have enough money to afford a pretty good limb. However his combat skills are very bad. What are some safeish ways I can remove one of my legs in the early game?