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This article explores key radiographic findings associated with avascular necrosis (AVN), specifically the Crescent Sign and Snowcapping phenomenon. These findings typically indicate areas of lucency and flattening of joint surfaces, providing critical insights into the extent of bone compromise. The FICAT classification system is discussed in detail, highlighting its relevance in diagnosing and assessing the progression of AVN. Understanding these signs can aid healthcare professionals in making informed treatment decisions and enhancing patient outcomes.
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Crescent Sign • Snowcapping • Areas of lucency • Flattening of joint surface
Flattening of joint surface Luscent areas
Flattening Snowcapping Luscent areas