See below. Most of my arthroscopic patients with menisectomy and patella chondroplasty are walking well in a few days and back to sports in 4-6 weeks.
Cartilage/meniscus. It depends how much was torn & how it was repaired. In general, 6 weeks.
Follow surg's plan. Ur surgeon has the answer 2 ur specific situation. Follow his/her protocol 4 recovery recommendations.