Explain a septic arthritis diagnosis and the urgent theatre plan to a parent — OSCE

Communication framework

Establish what the mother already understands and fears. Ask her to tell you, in her own words, what has happened so far and what she is most worried about. The fear for his walking and his future, the anxiety about the anaesthetic, and the confusion about the urgency are the three emotions you will spend the most time addressing, and you address them with plain language and with the evidence of why acting now protects his hip. Do not launch into the plan before you have heard her. ^[1]

Explain the diagnosis in plain language, without jargon. Tell her that her son has an infection inside the joint of his hip — the ball-and-socket joint — and that the pus building up inside is pressing on the bone and the blood supply in a way that can damage the hip permanently if it is not washed out quickly. Avoid the words septic, arthrotomy, and washout unless you translate them, and check her understanding by asking her to repeat back the key idea. The infection is treatable, and acting now gives him the best chance of a full recovery. ^[3]

Address the urgency directly and honestly. The reason the operation cannot wait for the morning is that the blood supply to the top of the thigh bone travels through the joint capsule, and the pus under pressure squeezes those blood vessels. Every hour the pus remains increases the risk of permanent damage to the bone, which could mean a limp or a shortened leg for life. The operation now is the safest choice for his hip, and the anaesthetic team will make him as safe as possible for it. Acknowledge that this is frightening and fast, and that you would not be recommending it if it were not necessary. ^[3]