INDividualised EXercise for Kneecap Dislocations

Inclusion Criteria: * First time or recurrent lateral patella dislocation meeting the diagnostic criteria of 1) requiring reduction by paramedics or 2) diagnosed by a member of the trauma and orthopaedic team. Exclusion Criteria: * Concurrent anterior cruciate ligament or posterior cruciate ligament injury confirmed by negative Lachman's and posterior drawer test or confirmed by Magnetic Resonance Imagery (MRI); medial collateral and lateral collateral ligament injury requiring application of a hinged knee brace or surgical repair; concomitant injury that would prohibit participation in the exercise intervention * \> 4 weeks from injury to presentation to acute care (ED or trauma services) * Unable to give written informed consent * Previous surgery on the affected knee * Presence of fracture on plain radiograph including osteochondral fractures * Medial patellar dislocation * Considered inappropriate for referral to physiotherapy (by member of trauma and orthopaedic team assessing the patient) * History of severe neuromuscular or congenital disorders * Patients referred for orthopaedic opinion who are subsequently listed for surgery prior to completion of the study intervention * Unable to understand written or spoken English * Unable to attend physiotherapy sessions at the John Radcliffe trauma outpatient physiotherapy department