In reply to Mountain Spirit:
I would avoid squats and deadlifts until completely recovered due to the increased stress on the joints.
Plus, steep climbing isn't bad on the knees, but could lead to falling off which is, so i would avoid that also.
Keep up with the yoga, gradually increase your walking and back off if you feel pain come back.
I think traversing easily would be the best way to start your journey back into climbing, but only when you're ready, and don;t push yourself to the point of falling off, step down before things get too difficult.
Wishing you a speedy recovery.