An orthopedic cast for protecting an injured body part, and including an embedded tube for routing a pressurized gaseous fluid to proximate the injured body part so that the pressurized gaseous fluid or effects thereof may be applied to the injured body part. The tube may be connected to a source of pressurized gaseous fluid to allow the pressurized gaseous fluid to be introduced into the orthopedic cast. With this orthopedic cast, various treatment may be applied to the injured body part, even though the injured body part is not directly accessible. As examples, to treat discomfort due to heat and/or perspiration, ambient or cooled pressurized air may be applied to the orthopedic cast. To cause a relaxation of muscles of the injured body part, heated pressurized air may be applied to the orthopedic cast. Medicated or therapeutic pressurized gaseous fluid may also be applied to the injured area via the orthopedic cast.