The contribution of anterior deltoid ligament to ankle stability in isolated lateral malleolar fractures

Tae Hoon Lee, Kyu Sun Jang, Gi Won Choi, Chan Dong Jeong, Suk Joo Hong, Min A. Yoon, Hak Jun Kim

    Research output: Contribution to journalArticlepeer-review

    31 Citations (Scopus)


    The treatment of isolated lateral malleolar fractures with deltoid ligament rupture remains controversial. We prospectively analysed 35 patients with isolated lateral malleolar fractures during 2006-2013. Radiography and magnetic resonance imaging (MRI) were performed to assess the degree of reduction, ligament damage, and stability. Internal fixation was performed for all unstable valgus fractures with unacceptable fracture parameters. Fractures with residual valgus instability after fixation underwent anterior deltoid repair. The mean anterior deltoid ligament grade based on MRI was significantly different between the high-grade unstable group and the stable and low-grade unstable groups (p = 0.037 and 0.004, respectively). Postoperative medial clear space measurements were not significantly different between groups. MRI was shown to be a useful tool in the preoperative identification of isolated lateral malleolus fractures prone to valgus instability. In the case of high-grade unstable fractures of the lateral malleolus, repair of the anterior deltoid ligament is adequate for restoring medial stability.

    Original languageEnglish
    Pages (from-to)1581-1585
    Number of pages5
    Issue number7
    Publication statusPublished - 2016 Jul 1

    Bibliographical note

    Publisher Copyright:
    © 2016 Elsevier Ltd. All rights reserved.


    • Anterior deltoid ligament
    • Isolated lateral malleolus fracture
    • Medial ankle instability
    • Superficial deltoid ligament

    ASJC Scopus subject areas

    • Emergency Medicine
    • Orthopedics and Sports Medicine


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