
particular piece of music playing (
2
)—pre-operative rituals among surgeons are widespread, varied,
and, until recently, largely undiscussed in the peer-reviewed literature. The operating room may
be governed by evidence-based medicine, but the surgeon who enters it is, first and foremost,
human.
Rituals have accompanied medicine since its earliest incarnations. In ancient Egypt, priestly
surgeons performed incantations over trepanned skulls and medieval barber-surgeons offered
prayers before amputations. As medicine transitioned into a scientific discipline, such practices
were expected to fade. And yet, as this survey demonstrates, they have not. Instead, they have
been reframed—often as ‘routines’ or ‘personal habits’—and quietly woven into the daily practice
of some of the most technically trained individuals in healthcare.
Despite their prevalence, pre-operative surgical rituals have received relatively scant scholarly
attention. The existing literature has focused predominantly on superstitions related to patient
outcomes, such as whether operating on Friday the 13th portends harm (it does not) (
3
;
4
),
rather than on the personal, psychological practices of surgeons themselves. This study aimed to
address that gap through a multispecialty, multinational survey distributed across the professional
networks of the author. In doing so, it examines a dimension of surgical practice that is seldom
discussed in the scientific literature. The operating theatre may be governed by evidence, protocol,
and precision, but the surgeon who steps into it remains, first and foremost, human. Understanding
the rituals that precede the first incision offers a window into the psychological preparation that
underpins technical performance.
The Anthropology of Ritual in High-Stakes Professions
Ritual behaviour in uncertain, high-stakes situations has been described across cultures and
professions for centuries. Anthropologist Bronislaw Malinowski’s influential ‘anxiety-ritual’ theory
(
5
) emerged from his observations of Trobriand islanders, who relied little on ritual during lagoon
fishing—an activity considered safe and predictable, dependent largely on skill and experience. In
contrast, elaborate rituals were reserved for deep-sea fishing, where danger, unpredictability, and
forces beyond human control were far greater. His work suggested that ritual tends to emerge at
the intersection between expertise and uncertainty. Surgeons, despite years of rigorous training
and technical mastery, practise daily at precisely this intersection.
Pearl Katz, an anthropologist at Johns Hopkins University, observed as early as 1981 that ‘in
modern operating rooms.. . rituals. . . occur as integral parts of surgical procedures’ (
6
). More
recently, a 2024 Medscape article on physician superstitions (
1
) reported that some surgeons
believe rituals and superstitions are more prevalent in medicine than in virtually any other profes-
sion. One survey respondent, a colorectal surgeon in New York, described a preparatory ritual
spanning nearly two hours: identical wake time, the same breakfast, the same route, the same
greeting at the hospital entrance.
Superstition, Ritual, and Evidence
A distinction must be drawn at the outset between ritual and superstition, and between both
of those and evidence-based routine. A surgeon who double-checks laterality before every
procedure is engaged in best practice. A surgeon who refuses to operate on a ward numbered
13 is engaging in superstition. A surgeon who always ties their left boot before their right is
performing a ritual. These categories overlap, but they are conceptually distinct.
The evidence on whether superstitions affect patient outcomes is, reassuringly, negative. A
landmark analysis published in the Annals of Surgery in 2021 examined the records of 27,914
consecutive patients undergoing general, visceral, or vascular surgery, finding no association
between moon phases, zodiac signs, or Friday the 13th and adverse outcomes (
3
). A subsequent
population-based cohort study of 19,747 adults, published in the Annals of Surgery Open in
2024, similarly found no increase in death, readmission, or complications among patients who
underwent one of 25 common surgical procedures on Friday the 13th compared to flanking
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