Cracking and popping joints, medically known as crepitus, are normal. Joints are points in your body where two bones meet. You might occasionally hear your knees popping or notice your back or bones crack as you move them.
A tendon rupture is a break in a tendon, the structure that joins a muscle to a bone. It can result from overuse, an injury, or an underlying condition.
Stronger quadriceps muscles, relative to the hamstrings, may lower the risk of total knee replacement, according to research being presented at the annual meeting of the Radiological Society of North America. Researchers said the findings could inform strength-training programs for people with advanced arthritis in the knee.
While it may be tempting to avoid exercise when knee pain occurs, this is not always the appropriate solution. Certain types of exercise can help alleviate existing knee pain and prevent future pain or injury by providing the knee with extra support.
The type of workout you do, and how your body gets its energy to fuel that movement, helps define these different forms of exercise.
