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  • Q&A with Australian Health Practitioners

    What causes patellar 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

    Patellar instability can result from anatomical factors (shallow groove, high-riding patella, ligament laxity, knock-knee alignment), acute trauma (direct blow or twisting injury), muscle weakness (particularly VMO), or previous dislocation that damaged stabilising structures. Risk factors include female gender, adolescence, family history, and participation in pivoting sports.

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