In Duke v. Wilson, 900 S.W.2d 881, 886 (Tex. App.--El Paso 1995, writ denied), the employee injured her right knee at work. See 900 S.W.2d at 883. Her doctor operated on the wrong knee, and complications resulted in the loss of her left knee cap. See id. The court concluded that the loss of her left knee cap was a compensable injury. See id. at 886. Thus, if an additional injury occurs "in the probable sequence of events and arises from the actual compensable injury," it is deemed to have occurred in the course and scope of employment for compensation purposes. Duke, 900 S.W.2d at 886.