Over-the-counter pain relievers, physical therapy, steroid injections -- some people have tried it all and are still dealing with knee pain.

Tears of the major tendons in the shoulder joint, commonly called the rotator cuff, are common in adults often resulting in surgery.

Over-the-counter pain relievers, physical therapy, steroid injections -- some people have tried it all and are still dealing with knee pain.

Over-the-counter pain relievers, physical therapy, steroid injections -- some people have tried it all and are still dealing with knee pain.

Researchers have developed a gel-based cartilage substitute to relieve achy knees that’s even stronger and more durable than the real thing.

Researchers are challenging centuries-old beliefs about the fundamental science related to how mammals might regenerate damaged body parts.