Purpose <p>This study aimed to clarify the morphological characteristics of the retrocalcaneal bursal wedge of Kager’s fat pad (KFP-W).</p> Methods <p>Fifty legs from 27 cadavers were examined. The KFP-W was categorized as either a single-lobule or double-lobule type based on the presence or absence of separation into medial and lateral lobules. Separation of the retrocalcaneal bursa was evaluated based on the presence of intrabursal connective tissue. The length, width, and thickness of the KFP-W were also measured.</p> Results <p>The single- and double-lobule types were each observed in 25 ankles (50%). In the single-lobule type, the KFP-W was positioned laterally on the superior facet, leaving a portion of the medial aspect of the facet uncovered, and no separation of the retrocalcaneal bursa was observed. In the double-lobule type, bursal separation was present in 16 ankles (64%), and the lateral lobule was significantly longer, wider, and thicker than the medial lobule (<i>p</i> &lt; 0.05).</p> Conclusion <p>These findings suggest that the KFP-W is primarily situated lateral to the Achilles tendon insertion, with a smaller or absent structure medially. Therefore, the medial region may exhibit reduced shock-absorbing capacity due to the less prominent KFP-W.</p>