Author/Authors :
Baghdadi، Soroush نويسنده Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, IR Iran , , Mortazavi، SM Javad نويسنده Joint Reconstruction Research Center, Imam Hospital
Complex, Tehran University of Medical Sciences, Tehran, IR
Iran , , Kaseb، Mohammad Hassan نويسنده Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, IR Iran , , Ayati، Mohammad Hossein نويسنده Department of Traditional Iranian Medicine, Faculty of Traditional Iranian Medicine, Tehran University of Medical Sciences, Tehran, Iran ,
Abstract :
Background
Acute patellar dislocation is a common injury, with up to 40% of the cases missed due to a high rate of spontaneous reduction. Complications mainly arise due to osteochondral fractures, resulting in patellofemoral osteoarthritis and rupture of medial patellar stabilizers, leading to recurrent patellar instability.
Methods
Institutional database was retrospectively reviewed to find patients with missed transient patellar dislocation. From January 2010 to January 2015, ten otherwise healthy patients with a history of indirect trauma to the knee were diagnosed with missed patellar dislocation. They all had persistent pain and effusion, despite conservative treatment.
Results
Eight patients eventually underwent arthroscopic debridement of osteochondral fractures and repair of ruptured ligaments, with no case of recurrent instability.
Conclusions
Detailed history taking and physical examination of all acute knee injuries, with a standard three dimensional (3D) X-ray imaging and a low threshold to obtain magnetic resonance imaging (MRI) studies, could minimize cases of missed patellar dislocation and possibly severe complications.
