The daily practice of orthopaedics demands philosophy, whether we notice or not. Each time we call a fracture healed, judge that a trial applies to the patient in front of us, or decide what a finding entitles us to conclude, we are doing epistemology, with regular excursions into causation and ethics. No one can abstain; the only real choice is whether to examine the commitments. I have been somewhat obsessed with that examination for more than two decades. The reason to write about it now (and with so many simultaneous projects) is that our tools for creating and interpreting knowledge are changing faster than our concepts.
Artificial intelligence can already gather and summarize clinical information at a scale no human reader can. It will increasingly help write, review, and interpret the medical literature. That will likely strengthen our scholarship, and in the long run it is something to embrace rather than fear, but it also raises the cost of imprecision. The language we use today becomes the material machines learn from tomorrow, without the skepticism an experienced reader brings, and AI makes latent epistemological problems operationally consequential by removing the friction that once kept them contained.
There is another risk. Machines learn only from what we record, and much of what matters to patients is imperfectly captured or never captured at all. The lived experience of an injury, including sleep, work, confidence, independence, and the shape of an ordinary day, cannot be reduced to numbers mined from an electronic record. As outcome analysis becomes more automated, the danger goes beyond wrong answers: the question itself may narrow. What counts may become what is countable.
Philosophical inquiry can (I think) help resist that narrowing. It asks what our measurements are measurements of, how categories acquire boundaries, when evidence warrants a conclusion, and where judgment enters what we later describe as discovery. These questions shape the claims we make about patients and the decisions we make with them. When medicine committed itself to evidence-based practice, the interpretation of evidence became a clinical act, something done for patients, daily, with consequences. Philosophy can surface assumptions that methodological review isn’t designed to catch.
The work collected here is a small attempt to examine what our clinical language claims to know, to bring some of the ideas and vocabulary of philosophy to the conversation, and to keep the person in view while the tools change around us. These essays look at familiar concepts from a slightly different angle, though I suspect most of us sense the questions are there, under the surface. The papers approach the problem from different directions, but they share a single question: what are we entitled to say that we know?