What Is the Anterior Talofibular Ligament?

The anterior tibial ligament is part of the ligament of the leg.

The anterior tibial ligament is part of the ligament of the leg.

Chinese name

Anterior peroneal ligament

Foreign name

From the fibular ligament

Nature

Leg ligaments

Features

Vulnerable

The general morphology and clinical significance of anterior peroneal ligament

The general shape of the anterior peroneal ligament is a flat tetrahedron with a wide end and a narrow middle section. This structure is suitable for its function. The talus and fibula are relatively wide, and the fiber dispersion is fan-shaped to cover and attach to the bone surface, which increases the area of the attachment area and the adhesion is stronger. When the ankle joint is in a neutral position, the direction of travel from the anterior fibula ligament is almost perpendicular to the longitudinal axis of the fibula. This structure effectively restricts the advance of the talus. However, in fact, the ligament is at an angle of about 25 ° to the horizontal plane. This angle shows that the ligament also plays an important role in resisting foot inversion. In addition, the distal end of the ligament wraps around and stops at the anterior outer angle of the lateral articular surface of the talus, and clearly forms a corner (140 ° ± 8 °) with the middle part of the ligament, and the corner of the ligament and its distal end including the talar attachment area are basically all Close to the talar bone surface, the author believes that when the ankle joint is varus and talus forward, this structure can effectively disperse the tension in the talar attachment region of the anterior fibula ligament and reduce the possibility of tearing or breaking in the talar attachment region. Sex. KUMAI's experiments on histology and immunohistochemistry of the anterior talar ligament also verified that the fibular attachment area of the ligament is more likely to tear than the talar attachment area.

Sonogram of anterior peroneal ligament

The anterior talofibular ligament starts from the anterior edge of the lateral malleolus and travels forward and medial to the talar neck. The anterior side of the fibula articular surface is connected to the lateral edge of the talus, making detection easier. The sonogram is as follows: the probe is vertical to the skin, the lateral malleolus and talus are bony landmarks, the ligaments have an inverted triangular uniform hypoechoic structure, and there are no obvious striped structures inside. The bottom of the triangle is diagonal from the lateral malleolus to the lateral edge of the talus. The boundary of the bottom edge and the adjacent soft tissue is clearer, and the remaining two sides are also clearer from the fibula articular surface and the lateral edge of the talus. In the plantar flexion position, the lateral malleolus and the talus are relatively flat, with the ligaments stretched, which is the easiest to detect. The audiogram is clearer than when the ankle is dorsiflexed and neutral.