Login
Communauté Vinci
Extérieur
Si votre nom d'utilisateur ne se termine pas par @vinci.be ou @student.vinci.be, utilisez le formulaire ci-dessous pour accéder à votre compte de lecteur.
Titre : | Imaging Features of Avascular Necrosis of the Foot and Ankle (2019) |
Auteurs : | Spencer Couturier |
Type de document : | Article |
Dans : | Foot and Ankle Clinics (Vol. 24, n° 1, 2019) |
Article en page(s) : | p. 17-33 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Imagerie par résonance magnétique ; Ostéonécrose ; Talus |
Note de contenu : | Avascular necrosis (AVN) and osteonecrosis are both terms that imply bone death secondary to circulatory disturbance and are often used interchangeably in medical literature.1 Historically osteonecrosis has been applied to describe ischemic bone death secondary to sepsis, whereas AVN denotes bone death that is both avascular and aseptic.2 A wide variety of processes can result in disturbance of the vascular supply with subsequent deprivation of oxygen leading to AVN, including traumatic or compressive arterial inflow disruption, venous outflow obstruction, or intraluminal vascular occlusion. The femoral head, humeral head, scaphoid, and talus are the most common sites of AVN after traumatic disruption of the intramedullary blood supply.1, 3, 4 AVN has been described in almost every bone of the ankle and foot, with trauma the leading cause.4 Nontraumatic causes of AVN include corticosteroids, alcoholism, hyperlipidemia, hemoglobinopathies, inherited thrombophilias, renal transplantation, diabetes, systemic lupus erythematosus (SLE), and irradiation.2, 3, 4 A wide variety of systemic processes increase the risk of AVN, including sickle cell disease, SLE, diabetic ischemia, and corticosteroids. Multifocal infarctions of the foot and ankle are possible with systemic causes of AVN, although the talus and calcaneus are the most commonly affected sites.5 |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S1083751518301062 |