Kager triangle
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Kager triangle is a radiolucent triangle seen posteriorly on lateral radiographs of the ankle.
It is bounded anteriorly by the flexor hallucis longus muscle and tendon, posteriorly by the Achilles tendon, and inferiorly by the calcaneus.
Kager's fat pad refers to the fat within this anatomic triangle, which normally appears dark (fat density) on radiographs. Pathologies affecting the aforementioned (and other nearby) bordering structures results in edema in the fat pad, which radiographically appears as loss of the normal margins and increased density in the triangle.
Edema in Kager's fat pad should lead to a careful search for bony or soft tissue injury, perhaps requiring additional views and/or cross-sectional imaging depending on the clinical suspicion.
-<p><strong>Kager triangle</strong> is a radiolucent triangle seen posteriorly on lateral radiographs of the ankle.</p><p>It is bounded anteriorly by the <a href="/articles/flexor-hallucis-longus-muscle" title="Flexor hallucis longus">flexor hallucis longus</a> muscle and tendon, posteriorly by the <a href="/articles/achilles-tendon" title="Achilles tendon">Achilles tendon</a>, and inferiorly by the <a href="/articles/calcaneus" title="calcaneus">calcaneus</a>.-</p>- +<p><strong>Kager triangle</strong> is a radiolucent triangle seen posteriorly on lateral radiographs of the ankle.</p><p>It is bounded anteriorly by the <a href="/articles/flexor-hallucis-longus-muscle">flexor hallucis longus</a> muscle and tendon, posteriorly by the <a href="/articles/achilles-tendon">Achilles tendon</a>, and inferiorly by the <a href="/articles/calcaneus">calcaneus</a>.</p><p>Kager's fat pad refers to the fat within this anatomic triangle, which normally appears dark (fat density) on radiographs. Pathologies affecting the aforementioned (and other nearby) bordering structures results in edema in the fat pad, which radiographically appears as loss of the normal margins and increased density in the triangle. </p><p>Edema in Kager's fat pad should lead to a careful search for bony or soft tissue injury, perhaps requiring additional views and/or cross-sectional imaging depending on the clinical suspicion.</p><p> </p>
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