Remember, injuries are also opportunities! Can’t run? Good! You can spend more time on total body strength and you are *text deleted* be in a much better place than just someone who can do VPJFT, sit ups, push ups and pull ups. Focus on getting great with those movements first. If you can max those reps out, great! Then let’s start adding more variations, attacking from multiple angles, especially the core and bulletproof your joints. If losing cardio is your worry try some of Iron Wolf’s workouts (once you have a solid base and burpees don’t hurt your leg), he has you covered! P.s.: give backward walking/running (check out my thread on it in the training plans) a go to see if that’s hurt too! It’s an exercise that’s widely used in rehab as changes the muscle activations but more importantly puts less impact forces on your joints while actually requiring a higher metabolic cost, there working your aerobic system just as good even at a slower pace.