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  • Q&A with Australian Health Practitioners

    What is patellofemoral instability?

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  • Dr Andrei Diacon

    Orthopaedic Surgeon

    Dr Andrei Diacon is an Australian-trained Orthopaedic Surgeon subspecialising shoulder and knee conditions. He takes an evidence-based, patient-centred approach, prioritising non-operative management where appropriate and … View Profile

    Patellofemoral instability occurs when the kneecap (patella) moves abnormally or slips out of its groove on the thigh bone (femur). This can range from a feeling of the kneecap “giving way” or shifting (subluxation) to complete dislocation where the kneecap moves entirely out of position. First-time dislocations often occur during sports or activities involving twisting. Recurrent instability may develop after the initial event.

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