Ankle sprain — ATFL, PTFL and CFL ligament injuries
A twisted ankle stretches or tears the outer ligaments — the anterior talofibular (ATFL), posterior talofibular (PTFL) and calcaneofibular (CFL). Most sprains heal with bracing and rehabilitation. Persistent pain or instability suggests a partial tear: ultrasound-guided PRP supports ligament healing, with a balance programme. Referral for reconstruction when instability persists.