At the The Orthopaedic Specialists of South Texas, we have brought together a team that has sub-specialized to diagnose and treat all conditions of the foot, ankle, hand, wrist, elbow, shoulder and sports injury, offering you the most state-of-the-art options for recovery. Led by fellowship trained and board certified orthopaedic surgeon, Mark Casillas, M.D., we are setting a new standard for patient care in San Antonio and South Texas.