What is the time frame your doctor told you?
Agree that is important info, but not necessarily predictive. My fellow MD told me in 1994 to stop backpacking and climbing.
Procedures on the knee 1994 microfracture and 2002 meniscus clean-up. I'm still going, although slower. Whitney summits 1996, 2006 by MR, and 2010 (age 59) and a whole lot of other mountains and thousands of miles hiking and backpacking in between.
Both surgery times, I'd say 3 months minimum time to begin backpacking and I did, final degree of recup took 6 months.
Your individual situation may vary of course. Best wishes.