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Posterolateral dislocation of the knee: Recognizing an uncommon entity.

Authors :
Woon CY
Hutchinson MR
Source :
World journal of orthopedics [World J Orthop] 2016 Jun 18; Vol. 7 (6), pp. 401-5. Date of Electronic Publication: 2016 Jun 18 (Print Publication: 2016).
Publication Year :
2016

Abstract

Posterolateral dislocations of the knee are rare injuries. Early recognition and emergent open reduction is crucial. A 48-year-old Caucasian male presented with right knee pain and limb swelling 3 d after sustaining a twisting injury in the bathroom. Examination revealed the pathognomonic anteromedial "pucker" sign. Ankle-brachial indices were greater than 1.0 and symmetrical. Radiographs showed a posterolateral dislocation of the right knee. He underwent emergency open reduction without an attempt at closed reduction. Attempts at closed reduction of posterolateral dislocations of the knee are usually impossible because of incarceration of medial soft tissue in the intercondylar notch and may only to delay surgical management and increase the risk of skin necrosis. Magnetic resonance imaging is not crucial in the preoperative period and can lead to delays of up to 24 h. Instead, open reduction should be performed once vascular compromise is excluded.

Details

Language :
English
ISSN :
2218-5836
Volume :
7
Issue :
6
Database :
MEDLINE
Journal :
World journal of orthopedics
Publication Type :
Report
Accession number :
27335816
Full Text :
https://doi.org/10.5312/wjo.v7.i6.401