If the defendant is responsible for an injury to the plaintiff, who then undergoes medical treatment, the defendant will be liable for anything that happens to the plaintiff as a result of negligence in the medical treatment, infection or other by-products.
The medical malpractice complications rule states that intervening acts of medical negligence that enhance a tort victim’s original injury are foreseeable as a matter of law. This means that, when a defendant acts negligently and, as a result, the victim requires medical care, the defendant will also face liability for any enhanced injuries the victim received from subsequent medical malpractice.
The “eggshell skull” rule states that you take your victim as you find them. So, if the slip and fall accident described above would normally only cause a few thousand dollars’ worth of harm, but Mrs. Allen loses her foot due to negligent treatment from the skilled nursing home, or negligence of subsequent physicians and/or staff and requires hundreds of thousands of dollars’ worth of medical treatment as a result, the grocery store where the original accident occurred is liable for the full amount of the injury to make the injured person whole.
If a defendant injures the plaintiff, and as a result of that injury, the plaintiff receives further injury or an aggravation of the existing one, the plaintiff is liable for all of this. If the defendant causes the plaintiff to become sick or otherwise weakened, and this weakened state leads to a foreseeable complication, the defendant will be liable. Additionally, if the injury makes the plaintiff particularly susceptible to another accident, which occurs, the defendant will be liable.
Reckless or intentional conduction by a subsequent medical provider is not foreseeable as a matter of law so if in the above fact pattern the amputating physician amputated the extremity contralateral to the decubitus ulcer, Defendant grocery store would not be liable for harm from this reckless amputation of the unaffected extremity.