Knee extensions: Straightening and bending the knee joint aids keep some muscle tone from the quadriceps, which can be important for supporting the hip joint. Robust influence on your extended arm When your arm is fully prolonged, the muscles and tendons are flexed and tight. Landing on your own arm https://www.theorthopaedicandpainpractice.com/i-have-a-broken-bone-what-should-i-do/