Reassure and safety-net a transient synovitis diagnosis with 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 that the limp means something serious, the confusion about why no antibiotics are being given, and the worry about school and sport are the three concerns you will spend the most time addressing, and you address them with plain language and with the evidence of why the exclusion of sepsis makes the reassurance safe. 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 inflammation of the lining of the hip joint that came on after his cold, that it is common and harmless in children his age, and that the tests — the blood markers and the ultrasound — were done specifically to make sure it was not the serious bacterial infection that can look the same. The inflammation is not an infection, which is why no antibiotics are needed, and it settles on its own within one to two weeks. Check her understanding by asking her to repeat back the key idea that the joint is inflamed but not infected. ^[6]

Explain why the exclusion of sepsis makes the reassurance safe. The reason the team can be confident is that the blood tests and the assessment showed none of the features of the bacterial infection — no high fever, the ability to bear weight, normal inflammatory markers. Explain that a child with the bacterial infection would have been kept in hospital for an operation and antibiotics, and that her son's results put him firmly in the safe group. Be honest that the tests reduce the risk to very low rather than to zero, and that this is why the team wants to see him again if anything changes. ^[1]