Hip arthroscopy for children is a minimally invasive surgical procedure used to treat problems inside the hip, such as labral tears. Arthroscopic surgery uses small incisions, thin instruments and a small camera called an arthroscope to repair and clear out any damage to the hip cartilage, trim the bony rim of the acetabulum (hip socket), and/or shave down the bump on the femoral head (ball joint at the top of the hip bone).