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Published in: Surgical and Radiologic Anatomy 1/2021

Open Access 01-01-2021 | Original Article

The Kager’s fat pad radiological anatomy revised

Authors: Paweł Szaro, Mateusz Polaczek, Bogdan Ciszek

Published in: Surgical and Radiologic Anatomy | Issue 1/2021

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Abstract

Purpose

The aim of the study was to map connections within the Kager’s fat pad between the structures which limit it.

Methods

A retrospective re-review of 200 ankle magnetic resonance imaging (MRI) examination was conducted. Connections within the Kager’s fat pad between the superior peroneal retinaculum, the fibulotalocalcaneal ligament, the posterior talocalcaneal ligament, the flexor hallucis longus, the paratenon of the Achilles tendon, the flexor retinaculum and bones were studied and a model of the connections was constructed.

Results

The superior peroneal retinaculum was directly connected with the fibulotalocalcaneal ligament in 85.5% of cases, the lateral part of the paratenon in 82.5%, the processus posterior tali in 78.5%, the posterior talofibular ligament in 32%, the flexor retinaculum in 29.5% and the anterior talofibular ligament in 9%.
The fibulotalocalcaneal ligament was connected with the paratenon (on the medial side 88.5%, on the lateral side 68.5%), the flexor retinaculum in 70%, the posterior process of the talus in 79%, the osteofibrosus tunnel for the flexor hallucis longus in 53%, the posterior talofibular ligament in 43.5% and the calcaneofibular ligament in 10.5%.
The posterior talocalcaneal ligament was connected with the fibulotalocalcaneal ligament in 71%, with the osteofibrosus tunnel for the flexor hallucis longus in 76.5%, with the flexor retinaculum in 70%. The plantaris tendon showed projection to the crural fascia in 34 of % cases.

Conclusion

In the Kager’s fat pad there are present more connections than previously reported. All the connections unit at the level of the posterior process of the talus.
Literature
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go back to reference Magi M, Branca A, Bucca C, Langerame V (1991) Hoffa disease. Ital J Orthop Traumatol 17:211–216PubMed Magi M, Branca A, Bucca C, Langerame V (1991) Hoffa disease. Ital J Orthop Traumatol 17:211–216PubMed
Metadata
Title
The Kager’s fat pad radiological anatomy revised
Authors
Paweł Szaro
Mateusz Polaczek
Bogdan Ciszek
Publication date
01-01-2021
Publisher
Springer Paris
Published in
Surgical and Radiologic Anatomy / Issue 1/2021
Print ISSN: 0930-1038
Electronic ISSN: 1279-8517
DOI
https://doi.org/10.1007/s00276-020-02552-1

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