• M Jordan, M Thomas, F Elser, and W Fischer.
• Fuß- und Sprunggelenkschirurgie, Hessingpark-Clinic, Hessingstr. 13, 86199, Augsburg, Deutschland. martin.jordan@hessingpark-clinic.de.
• Unfallchirurg. 2018 Sep 1; 121 (9): 704-714.

AbstractThe medial collateral ligament (MCL) complex is characterized by a complex anatomical arrangement of the individual ligamentous structures including three joints and the spring ligament complex. Biomechanically it serves as the main stabilizing structure in the ankle region against rotational and pronating forces. Lesions in the region of the MCL complex are more frequent than previously thought and like lesions of the spring ligament complex can lead to pain and instability. A thorough examination including the patient history with possible injury mechanisms often yields valuable information on the diagnosis of injuries to the MCL or spring ligament complex. In many cases these are primarily overlooked and concomitant lesions, such as fractures, syndesmotic and lateral ligament lesions frequently occur; however, the clinical assessment of stability is often primarily impossible in an acute setting. High-resolution magnetic resonance imaging (MRI) plays a key role in identifying the ligamentous components. In addition, MRI plays a supportive role in the preoperative planning before reconstruction of acute and especially chronic lesions. In most cases the surgical treatment of acute ruptures of the MCL is not indicated. Various options for treatment of acute and chronic lesions of the MCL and spring ligament complex are available including the use of free tendon grafts. Controversy exists regarding the operative treatment of MCL lesions in the case of ankle fractures. It is recommended for cases with impinging tissue in the medial gutter serving as a barrier to adequate reduction of the joint and in cases of unstable fractures after reduction.

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