A 30-year-old football player presented with a 10-day history of dorsolateral ankle pain following a low-velocity inversion and plantarflexion injury involving the left ankle. A complete examination of the ankle and foot was conducted which demonstrated swelling at the dorsolateral aspect of the foot. Rotational movements of the hindfoot and midfoot joints and inversion stress test caused pain but no significant laxity of the lateral collateral ligaments. Initial point of care left ankle and foot plain film radiographs revealed no definite fracture or dislocation. A subsequent ultrasound examination performed on the same day demonstrated a small 3 mm bony avulsion fracture at the anterosuperior process of the calcaneus (figure 1) and an intact anterior talofibular ligament (ATFL). An MRI examination was performed 7 days later and re-demonstrated the small bony avulsion fracture at the anterior process of the calcaneus and a ligamentous injury involving the medial and lateral limbs of the bifurcate ligament (figure 2A, B). Figure 1 (A) Long axis ultrasound image demonstrating a small bony …

中文翻译：

---

跗骨中部（Chopart）关节韧带损伤

一名 30 岁的足球运动员在左脚踝低速内翻和跖屈损伤后出现 10 天的踝关节背外侧疼痛病史。对脚踝和足部进行了全面检查，显示足部背外侧肿胀。后足和中足关节的旋转运动和倒立压力试验引起疼痛，但外侧副韧带没有明显松弛。初始护理点左脚踝和足部平片 X 光片显示没有明确的骨折或脱位。随后于同日进行的超声检查显示，跟骨前上突有 3mm 的小骨撕脱性骨折 （图 1），ATFL 前裂韧带完整。7 天后进行 MRI 检查，重新显示跟骨前突的小骨撕脱性骨折和涉及分叉韧带内侧和外侧肢体的韧带损伤（图 2A、B）。图 1 （A） 长轴超声图像显示一个小骨...