Orthopedic surgery or orthopedics is the branch of surgery concerned with conditions involving the musculoskeletal system. Orthopedic surgeons use both surgical and nonsurgical means to treat musculoskeletal trauma, spine diseases, sports injuries, degenerative diseases, infections, tumors, and congenital disorders.

Obstetrics and gynecology (commonly known as OB-GYN, OBG, O&G or obs and gynae) is the medical specialty that deals with obstetrics and gynecology. Postgraduate training programs for both aspects are usually combined, preparing the practicing obstetrician-gynecologist to be adept at the care of female reproductive organs’ health and at the management of pregnancy, although many doctors go on to develop subspecialty interests in one field or the other.