I've had arthroscopic surgery on both knees (2007? and 2010?). My physical therapy was to ride my bike on the trainer every day. The first session was about 6 hours after the surgery.
After 4 weeks my Sports Medicine doc (who is also a cyclist) said I could get back out on the road.
Never even looked at or considered a pedal forward bike. I've always been a roadie and still am at 70 y/o.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.