It has been 30 years so I assume things are different now but my surgeon told me the recovery would involve 6 weeks in a hip length cast followed by 6 weeks in a knee length cast followed by physical therapy. Then they'd do the other leg. You can see why I didn't want to do that if there was anyway that I could avoid it.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.