Ankle – (Low Ankle) Lateral ankle sprain

CASE HISTORY

• Stepped on another player’s foot and felt a pop in the ankle

TECHNICAL FACTORS

• Long- and short-axis fat- and water-weighted images were performed. 1.5T High Field Oval

KEY IMAGES

CASE FINDINGS

• Effusion and hemarthrosis.
• Anterior talofibular ligament ruptured.
• Calcaneofibular ligament ruptured.
• Posterior talofibular ligament swollen but intact.
• High ankle and syndesmosis normal.
• Peroneal retinaculum torn.
• Peroneus longus and brevis normal.
• Medial tendon group normal.
• Anterior tendon group normal.
• Posterior tendon group normal.
• Subtalar ligaments abnormal:
  • a. Talocalcaneal interosseous ligament intact.
  • b. Cervical ligament ruptured.
  • c. Inferolateral retinaculum or stem ligament torn.
• Skeleton: No fractures no OCDs and large os trigonum.
• Soft Tissues: Large anterolateral hematoma with soft tissue swelling

CASE CONCLUSION

• Two part ankle sprain/rupture low ankle.  High ankle spared.  Hematoma.  Subtalar ligamentous injury involving cervical and inferolateral ligamentous complex