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Imaging of traumatic injury and impingement of anterior knee fat.

Lapègue, Franck and Sans, Nicolas and Brun, Céline and Bakouche, Sarah and Brucher, Nicolas and Cambon, Zoé and Chiavassa-Gandois, Hélène and Larbi, Ahmed and Faruch, Marie Imaging of traumatic injury and impingement of anterior knee fat. (2016) Diagnostic and Interventional Imaging, 97 (7-8). 789-807. ISSN 2211-5684

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Official URL: https://doi.org/10.1016/j.diii.2016.02.012

Abstract

Fat is not just used by the body as bulk tissue. In addition to its role in storing energy and regulating hormone action, fat is used in some parts of the body for its mechanical properties. The anatomy of anterior knee fat is more complex than it appears at first sight and is capable of withstanding considerable compressive and shear stress. Specific lesions occur when such mechanical stress exceeds the physiological limits and are yet little known. Superficial fat can be the site of either acute injury by closed degloving called the Morel-Lavallée lesion or chronic injury, when subject to repeat excessive shear forces, due to more complex and less well-defined disruptions that result in pseudo-bursitis. There are three main anterior, intracapsular and extrasynovial fat pads in the knee joint, which are the infrapatellar fat pad (IFP) or Hoffa's fat pad, the quadriceps fat pad and the prefemoral fat pad. The IFP plays an important role as a mechanical shock absorber and guides the patella tendon and even the patella itself during flexion-extension movements. In response to repeated excessive stress, an inflammatory reaction and swelling of the IFP is first observed, followed by a fibrotic reaction with metaplastic transformation into fibrous, cartilaginous or bone tissue. More rarely, the two other deep fat pads (quadriceps and prefemoral) can, if subject to repeated stress, undergo similar restructuring inflammatory reactions with metaplasia resulting in tissue hardening, anterior pain and partial loss of function

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at http://www.sciencedirect.com/science/article/pii/S2211568416000851#!
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Centre d'imagerie du Languedoc - CIL (FRANCE)
Other partners > Centre Hospitalier Universitaire de Nîmes - CHU Nîmes (FRANCE)
Other partners > Centre Hospitalier Universitaire de Toulouse - CHU Toulouse (FRANCE)
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Deposited By: Pascal SWIDER
Deposited On:15 Nov 2017 09:32

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