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Kliniske og billeddiagnostiske fund ved patellofemoral instabilitet

Forfatter(e)

Signe Brinch1, Philip Hansen1, Peter Lavard2, Mikael Ploug Boesen1 & Michael Rindom Krogsgaard2

1) Radiologisk Afdeling, Muskuloskeletal Forskningsenhed, Københavns Universitetshospital – Bispebjerg-Frederiksberg Hospital, 2) Ortopædkirurgisk Afdeling, Idrætskirurgisk Enhed, Københavns Universitetshospital – Bispebjerg-Frederiksberg Hospital

Ugeskr Læger 2021;183:V01210025

Reference: 
UgeskrLæger 2021;183:V01210025
Clinical and diagnostic-imaging findings in patellofemoral instability

Signe Brinch, Philip Hansen, Peter Lavard, Mikael Ploug Boesen & Michael Rindom Krogsgaard

Ugeskr Læger 2021;183:V01210025

Trochlear dysplasia is the most common cause of objective patellofemoral instability (OPI). This review summarises the present knowledge on the diagnostics. On true lateral knee X-rays, it is possible to detect the crossing sign, which is the most important imaging marker for trochlear dysplasia of all types. This sign should be identified in relation to examinations in the emergency room, and if OPI is suspected, the patient should be referred to the orthopaedic department for further diagnosis. Increased attention to signs of trochlear dysplasia on X-rays may lead to earlier treatment of OPI patients.

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