Last summer, Elizabeth Lamoureux was diagnosed with Femoroacetabular Impingement (FAI) in her right hip. FAI creates abnormal contact and wear in the hip joint, between the ball—top of the femur (thigh bone)—and the socket—acetabulum (depression in the pelvic bone).

This...

At 38, my doctor diagnose me with severe (grade 4) bone-on-bone left hip osteoarthritis. Since I was too young for a joint replacement, he advised me to reduce my activity level and avoid any movements that hurt. When the pain was excruciating enough, and my activity limited enough, they would...