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Paeds Casesrheumatology-musculoskeletal-and-sports

Paeds Cases · rheumatology-musculoskeletal-and-sports

Explain an unstable slipped capital femoral epiphysis and the urgent operation to a parent — OSCE

OSCE communication and shared-decision station: explaining a new diagnosis of an unstable slipped capital femoral epiphysis to the parent of a thirteen-year-old boy, outlining the urgent reduction and single-screw fixation and the avascular necrosis risk in plain language, addressing the fear and the urgency without overwhelming, and securing consent for the operation.

osce communication and shared decision-making
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Target exams

MRCPCH ClinicalRACP DCERCPSC Pediatrics

Target exams

MRCPCH ClinicalRACP DCERCPSC Pediatrics
Prompt
The mother of a thirteen-year-old boy, brought to the emergency department unable to walk and holding his left leg externally rotated, has just been told that the growth plate at the top of his thigh bone has slipped and that he needs an urgent operation to fix it with a screw before the bone loses its blood supply. She is frightened about his future mobility, anxious about the anaesthetic, and confused about why an operation is needed tonight rather than waiting for the morning. Counsel her.

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 tonight 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 a slipped growth plate at the top of his thigh bone — the ball of the ball-and-socket hip joint — and that the ball has shifted on its neck because the growth plate that holds it in place has weakened during his growth spurt and given way under his weight. Avoid the terms epiphysis, physis, and capital realignment unless you translate them, and check her understanding by asking her to repeat back the key idea. The condition is treatable, and acting tonight gives him the best chance of a full recovery. [7]

Address the urgency directly and honestly. The reason the operation cannot wait for the morning is that the blood vessels supplying the ball of the hip joint travel along the neck of the bone, and the slip has kinked and stretched them. Because her son cannot walk on the leg, the slip is unstable, and the longer the ball sits in the slipped position, the higher the risk that the blood supply is lost permanently — which would mean a collapsed hip, a limp, and an artificial joint in early adulthood. The operation tonight repositions and fixes the bone to protect the blood supply, 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. [1] [10]

Outline the plan and the timeline. The operation is done under a general anaesthetic, and the surgeon will gently reposition the ball and hold it in place with a single metal screw through a small cut on the side of the hip, lasting roughly forty-five to sixty minutes. After the operation he will stay in hospital for a few days, non-weight-bearing on crutches or a wheelchair, and the team will repeat his radiographs to confirm the fixation and to watch for the blood-supply complication. He will be followed in the clinic for the next year, and the opposite hip will be checked at every visit because up to forty per cent of children slip the other side too. Ask her for her consent to the operation, and offer her the chance to be with him as he goes to sleep. [7]

Invite questions and confirm the shared decision. Ask whether she has any questions, address the specific fears she raised at the start, and confirm her consent. Document the discussion, and ensure she has a named team member to update her after the operation. The mother who feels heard, informed, and supported is the mother who stays engaged through the months of follow-up that follow, and the communication is as much a part of the management as the screw. [7]

References

  1. [1]Loder RT, Richards BS, Shapiro PS, Reznick LR. Acute slipped capital femoral epiphysis: the importance of physeal stability. J Bone Joint Surg Am, 1993.PMID 8354671
  2. [7]Dussa CU. Slipped capital femoral epiphysis: pathomechanism, clinical presentation, diagnosis, natural history and treatment. A review of the literature. Orthopadie (Heidelb), 2026.PMID 41951777
  3. [10]Xu Z, Zhu L, Kong L, Qian Y. Risk factors associated with avascular necrosis following unstable slipped capital femoral epiphysis in pediatric patients: A systematic review and meta-analysis. PLoS One, 2025.PMID 40737348