Mark D. Fischer, MD, is board certified in hand and upper extremity surgery as well as general orthopedics. His office practice consists almost exclusively conditions of the arm, particularly the elbow, wrist and hand. He has a special interest in the arthroscopic treatment of carpal tunnel syndrome as well as thumb basal joint, wrist and elbow conditions. He also has an interest in arthritic conditions of the hand, particularly the base of the thumb. Dr. Fischer treats all injuries of the hand; including lacerations, tendon and nerve injuries. He also treats all orthopedic injuries of the entire skeleton on an emergency basis at North Memorial Hospital.