Bicycle climbing is not recommended after knee surgery, and can be considered after full recovery, and less intense exercise can be performed. If you have had knee surgery, whether it is a patella fracture or artificial knee replacement, the damage to the knee joint is relatively large, so it takes a longer time to recover, and it is not suitable for strenuous exercise after recovery, so it is not recommended that people after knee surgery ride a bicycle to climb a hill. If you have recovered well, you can exercise moderately with your doctor’s consent, but with less intense exercises, including slow walking, Tai Chi, etc., which not only can achieve the purpose of moving joints and strengthening muscles, but also have relatively less danger and less pressure on the knee joint.