Surgery Before Cleanliness
In the early nineteenth century, an operation could succeed and the patient still die days later of infection. Surgeons often wore old coats stiff with blood as a sign of experience, reused sponges and instruments without washing, and operated in rooms that were also used for teaching or general care. Wounds that turned red, swollen and discharged pus were so common that doctors sometimes treated them as a normal stage of healing. The cause was not understood, and several rival ideas, including bad air, were popular.
The spread of anesthesia in the 1840s made this worse in one respect. Surgeons could now operate for longer and attempt more ambitious procedures, which gave infection more opportunity. Hospitals in crowded cities had especially bad records, and some surgeons wanted to move patients out of them.
Semmelweis and the Handwashing Argument
In 1847 Ignaz Semmelweis, a Hungarian physician working at the Vienna General Hospital, noticed that women died of childbed fever far more often in a ward staffed by doctors and medical students than in a ward staffed by midwives. He suspected that the doctors, who also performed autopsies, were carrying something from corpses to patients. He ordered handwashing with a chlorinated solution, and deaths on his ward dropped.
His results did not win a quick victory. Semmelweis did not have a theory that colleagues found convincing, he wrote little at first, and many physicians took the claim as an insult. He is now often described as a pioneer of infection control, but it is fair to say his ideas were not widely accepted in his lifetime and the details of his career are told in several versions. The simple lesson, that hands and instruments can carry disease, is clear enough.
Lister and Carbolic Acid
Joseph Lister, a surgeon in Glasgow, read the work of Louis Pasteur on fermentation and decay and suggested that wound infections might be caused by living microorganisms in the air and on surfaces. Carbolic acid, also called phenol, was already used to treat sewage, and in 1865 and 1867 Lister began applying it to compound fractures, where a broken bone pierces the skin and infection was often fatal. In 1867 he published results describing better outcomes.
Over the following years Lister’s method grew into a system:
- instruments and the surgeon’s hands were washed in carbolic solution
- wounds were covered with dressings soaked in the acid
- a hand-pumped or steam-driven spray filled the air over the operating field with a fine mist of dilute carbolic acid
The spray became the best-known symbol of the method. It was unpleasant for staff, irritating to skin and lungs, and later even Lister abandoned it as unnecessary. The dressings and washing mattered more than the spray.
Argument and Acceptance
Acceptance varied by country. Surgeons in Germany often took up antiseptic methods earlier than many in Britain and the United States, while some prominent surgeons elsewhere remained skeptical for years. The growing evidence for germ theory, the idea that particular microbes cause particular diseases, eventually gave the practice a stronger foundation, including the work of Robert Koch in the 1870s and 1880s on bacteria and infection. Even so, adoption was gradual, and reasonable people disagreed about the evidence at the time.
From Antiseptic to Aseptic
The next step was to prevent germs from entering the wound at all rather than killing them once there. This approach is called asepsis. German surgeons in the 1880s, among them Ernst von Bergmann, began using steam sterilization for instruments and dressings, a method more reliable than chemical soaking. Over the following decades operating rooms changed in visible ways:
- instruments were boiled or steamed in autoclaves
- surgeons scrubbed their hands and forearms
- gowns, caps and, eventually, masks were introduced
- surfaces were built to be washed easily, with tile and metal replacing wood
Rubber gloves joined the routine in the 1890s. Masks were adopted unevenly in the early twentieth century, and the details of when and why vary by hospital.
Why It Matters to the History of Instruments
Cleanliness changed how instruments were designed. Wooden and ivory handles, which absorbed fluid and could not be boiled, gave way to all-metal tools, and stainless steel later became common in surgical kits. Hospitals also built dedicated rooms for operations, and a standard operating theater began to take shape.
This is a history of how practices changed, not guidance for medical or surgical care. Outcomes in the nineteenth century were uncertain, records are incomplete, and exact figures from the period should be treated cautiously.