Scholarlink

Background <p>The deep, flexor hallucis longus (FHL)-associated part of Kager’s fat pad (KFP-F) is adjacent to structures implicated in the pathophysiology of posterior ankle impingement syndrome (PAIS), and pathological changes within Kager’s fat pad itself are also observed in PAIS. However, the detailed topographical relationships of these structures in the deep ankle remain insufficiently understood. This study aimed to provide a comprehensive anatomical description of the KFP-F and its relationship with surrounding neurovascular and musculoskeletal structures.</p> Methods <p>Fifty legs from 28 Japanese cadavers (28 male, 22 female; mean age at death, 78 years) were examined. The presence or absence of direct contact and positional relationship between the KFP-F with FHL, tibial nerve, posterior tibial artery, posterior tibial vein, talocrural joint capsule, and subtalar joint capsule was systematically evaluated. The width of the contact interface of KFP-F with the talocrural and subtalar capsules were measured and compared.</p> Results <p>The KFP-F demonstrated direct contact with the FHL and the talocrural and subtalar joint capsules in all specimens. In 45 ankles (90%), the KFP-F also demonstrated direct contact with the tibial nerve, posterior tibial artery, and posterior tibial vein. Notably, the KFP-F was observed to circumferentially envelop the superficial and deep aspects of the FHL and neurovascular structures. The width of the contact interface with the talocrural joint capsule was significantly greater than that with the subtalar joint capsule (<i>p</i> &lt; 0.01).</p> Conclusion <p>The KFP-F forms circumferentially enveloping relationship with the FHL and the posterior tibial neurovascular bundle. This detailed topographical description provides a crucial foundation for improving the interpretation of diagnostic imaging and refining surgical approaches for deep posterior ankle pain.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Morphological characteristics of the flexor hallucis longus-associated part of Kager’s fat pad

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月7日

查看全文
  • Kodai Sakamoto,
  • Mutsuaki Edama,
  • Tomonobu Ishigaki,
  • Hirotake Yokota,
  • Ryo Hirabayashi,
  • Makoto Komiya,
  • Junichi Kawakami,
  • Taku Toriumi

摘要

Background

The deep, flexor hallucis longus (FHL)-associated part of Kager’s fat pad (KFP-F) is adjacent to structures implicated in the pathophysiology of posterior ankle impingement syndrome (PAIS), and pathological changes within Kager’s fat pad itself are also observed in PAIS. However, the detailed topographical relationships of these structures in the deep ankle remain insufficiently understood. This study aimed to provide a comprehensive anatomical description of the KFP-F and its relationship with surrounding neurovascular and musculoskeletal structures.

Methods

Fifty legs from 28 Japanese cadavers (28 male, 22 female; mean age at death, 78 years) were examined. The presence or absence of direct contact and positional relationship between the KFP-F with FHL, tibial nerve, posterior tibial artery, posterior tibial vein, talocrural joint capsule, and subtalar joint capsule was systematically evaluated. The width of the contact interface of KFP-F with the talocrural and subtalar capsules were measured and compared.

Results

The KFP-F demonstrated direct contact with the FHL and the talocrural and subtalar joint capsules in all specimens. In 45 ankles (90%), the KFP-F also demonstrated direct contact with the tibial nerve, posterior tibial artery, and posterior tibial vein. Notably, the KFP-F was observed to circumferentially envelop the superficial and deep aspects of the FHL and neurovascular structures. The width of the contact interface with the talocrural joint capsule was significantly greater than that with the subtalar joint capsule (p < 0.01).

Conclusion

The KFP-F forms circumferentially enveloping relationship with the FHL and the posterior tibial neurovascular bundle. This detailed topographical description provides a crucial foundation for improving the interpretation of diagnostic imaging and refining surgical approaches for deep posterior ankle pain.