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Posteroinferior tibiofibular ligament - A cadaveric study.

Carla Fernandes Martins1, Margarida Miranda2, Ivan M Cortegana3

  • 1Department of Orthopedics, Centro Hospitalar Tondela - Viseu, Viseu, Portugal.

Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons
|June 27, 2020
PubMed
Summary

This study details the anatomy of posterior ankle ligaments, including the posteroinferior tibiofibular ligament (PITFL) and intermalleolar ligament (IML). Understanding these structures is crucial for treating common ankle injuries.

Keywords:
Ankle injuriesIntermalleolar ligamentPosteroinferior tibiofibular ligament

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Area of Science:

  • Anatomy
  • Orthopedics
  • Sports Medicine

Background:

  • Ankle injuries are a prevalent musculoskeletal disorder.
  • Existing literature shows controversy regarding the morphology and nomenclature of posterior ankle ligaments, particularly the PITFL and IML.
  • These ligaments are implicated in posterior soft tissue impingement syndrome.

Purpose of the Study:

  • To meticulously analyze and describe the detailed anatomical arrangement and relationships of the posterior ankle ligaments.
  • To clarify the morphology and nomenclature of the posteroinferior tibiofibular ligament (PITFL) and intermalleolar ligament (IML).
  • To provide quantitative data to aid in the treatment of ankle injuries.

Main Methods:

  • Seventeen fresh-frozen cadaveric feet were utilized for detailed anatomical examination.
  • The origins, insertions, lengths, and orientations of the PITFL relative to bony landmarks were evaluated.
  • The presence and characteristics of the IML were also documented.

Main Results:

  • The PITFL was consistently present, composed of superficial and deep fibers with variable dimensions.
  • The IML was observed in 82.4% of specimens, situated between the deep PITFL and posterior talofibular ligament.
  • Variations in IML structure were noted, including splitting into bundles and the presence of three slips in some cases.

Conclusions:

  • A thorough anatomical understanding of posterior ankle ligaments is essential due to the high frequency of injuries.
  • Clinically relevant quantitative data on these ligaments can significantly improve surgical treatment strategies.
  • Further research into ligamentous anatomy will enhance the management of ankle pathologies.