Which lower body lifting exercises can I do with a meniscal injury. My doctor has cleared me for walking and stairs without a brace or krutches?

Need more info. Do you have a mensical tear? If you do and had a surgical menisectomy, usually my patients are walking within a few days, then stationary biking, then running in 3-4 weeks. Things like stairs and crouching are variable based on quad strength and body weight.
Ask ortho. Squats are out straight leg raise are in cycle with resistance any thing that dosent hurt that is not weight bearing is fine.