Hello, welcome to healthcaremagic.com Since you are able to High-intensity exercises with an injury to knee suggest it to be of minor nature however I m bothered about the radiating pain. generally knee pain can give rise to the hip pain but it is non-radiating in nature and don t run until ankles. If your knees are too stressed out with burpees and you do not wish to give rest to your knees at least change the exercise because these exercises put a strain on your knees which require rest to heal. If the pain is not relieved after a week or two after injury, a physical examination is a must. please follow up with the answer to these queries, so that we can help you in a better way How much time has already passed since the injury? what kind of sound do you hear from your knees? do you have back pain? is there any sensory loss or tingling numbness in leg/feet/thighs? Your age? A little more description about the line on the leg and why your husband feel there is a torn muscle. Feel free to join us back. Regards Dr. Sumit Chawla