Avascular necrosis: radiological findings and main sites of involvement - pictorial essay

• Autor(a) principal: Enge Junior,Dair Jocely
• Data de Publicação: 2019
• Outros Autores: Fonseca,Eduardo Kaiser Ururahy Nunes, Castro,Adham do Amaral e, Baptista,Eduardo, Santos,Durval do Carmo Barros, Rosemberg,Laercio Alberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Radiologia Brasileira (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842019000300187
• topic: Osteonecrosis/diagnostic imaging; Radiography; Tomography, X-ray computed; Magnetic resonance imaging

Abstract The term avascular necrosis describes any one of a number of bone diseases that have a common mechanism: the death of bone components due to lack of blood supply. Avascular necrosis can occur in diverse parts of the skeleton, each location-specific form not only receiving a distinct designation but also presenting unique epidemiologic characteristics. However, the imaging findings are similar in all of the forms, which pass through well-described radiological phases, regardless of the site of involvement. Because avascular necrosis can cause considerable morbidity if not properly detected and managed, the radiologist plays a fundamental role. The present study provides a brief review of the main radiological aspects of the various forms of avascular necrosis, illustrated on the basis of a collection of cases from our institution.