Wayne L. Anderson appeals from a judgment denying him damages from hernia surgery he *768 underwent subsequent to an automobile accident. The issue is whether the defendant is liable for damages from the aggravation of the plaintiffs pre-existing condition even though the condition would most likely have required surgery in the future. 1 We conclude that Anderson may recover for such damages, and we remand to the trial court to determine the amount of damages.
Anderson was injured when Milton Cherveny's automobile struck Anderson's automobile broadside in the driver's door. Anderson was taken to the hospital and was released without treatment. Eighteen days after the accident, Anderson returned to the hospital because of continued pain in the groin area.
Anderson was diagnosed as having a congenital inguinal hernia. A congenital inguinal hernia is defined as a weak abdominal wall that exists in the person from birth. The hernia becomes an "apparent hernia" when the weak abdominal wall allows an abdominal organ to cause a bulge in the abdominal area. The hernia then becomes diagnosable. Anderson underwent corrective surgery for the apparent hernia. Since the surgery Anderson has experienced no further pain associated with the hernia.
It was stipulated that Cherveny was 100% at fault and that Anderson was not negligent. The only issue was causation and damages. The case was tried without a jury.
Two physicians testified at trial. Both agreed that Anderson was born with an inguinal hernia. Both physicians agreed that inguinal hernias remain dormant and do not become apparent until there is some pressure to the abdomen. Although both physicians agreed that *769 Anderson was born with the hernia, they disagreed whether the accident triggered the apparent hernia. Furthermore, the physicians disagreed whether the hernia would have become apparent as a result of other events later in Anderson's lifetime.
The trial court found that the accident did not cause the congenital hernia, but that the "accident made a latent hernia apparent." The trial court concluded that the repair of the apparent hernia was not compensable, based on the finding that Anderson would have had the problems with the hernia from the natural progression of the pre-existing condition even in the absence of this accident. Alternatively, the trial court concluded that the damages were not compensable because the hernia would have become apparent during Anderson's lifetime without the accident and the treatment would have been the same.
The trial court's factual findings are not in dispute. The only issue is whether the trial court properly concluded that damages from the apparent hernia are not compensable. An appellate court is not bound by a trial court's conclusion of law and decides the matter
de novo. See Green Scapular Crusade, Inc. v. Town of Palmyra,
Because Anderson's hernia was a pre-existing condition, the "thin-skull" common law rule applies. The law in Wisconsin is that if the defendant's actions were the precipitating cause of the injury complained of, and such injury was the natural consequence of the actions, the defendant is liable, although the plaintiffs physical condition might have aggravated the injury.
Vosburg v. Putney,
The defendant argues that the apparent hernia was a result of the natural progression of the pre-existing condition, and thus is attributable to causes other than the accident. The physicians agreed that an apparent hernia is the result of some degree of abdominal pressure. The trial court found that the accident caused the hernia to become apparent. Consequently, Anderson underwent surgery to correct the apparent hernia. The apparent hernia was the natural consequence of the accident, and Anderson was more susceptible to serious injuries from the accident because of his pre-existing hernia. The apparent hernia was not a natural progression of causes other than the accident. His damages from the accident were increased because of the pre-existing condition. Therefore, Anderson's actual damages include the repair and related expenses of the apparent hernia.
The defendant also argues that although the accident caused the apparent hernia, the damages are not compensable because the apparent hernia was inevitable and the treatment would be the same. The defendant states that the congenital hernia was treated sooner rather than later. Wisconsin law does not support the proposition that when the injuries from an accident are the same as the injuries that may inevitably occur due to a pre-existing condition, the injuries from the accident are completely uncompensable. However, such a situation may reduce the amount of damages. For example, in
Fantin v. Mahnke,
Similarly, in
Schaidler v. Chicago & Northwestern Railway Co.,
Based on these cases, we conclude that even though the "thin-skull" plaintiff may inevitably suffer similar injuries from the pre-existing condition unrelated to the accident, the defendant is liable for damages that are a natural consequence of the accident. Because Anderson's increased injuries are a natural consequence of the accident, the defendant's argument is relevant only in determining the amount of damages. We reverse the judgment *772 of the trial court and remand for a determination on the amount of damages.
By the Court. — Judgment reversed and cause remanded.
Notes
Based on the parties' stipulation, the court ordered the plaintiffs claim against Milton Cherveny and Milwaukee Insurance which exceeded $100,000 to be dismissed from the action.
