Ankle sprain due to forced inversion of a plantar Hexed foot is due to injury to:
Ans. a. Anterior talofibular ligament (Ref: Apley 8/e p733-736; Ockwood and Green's Fracture in Adults 6/e p2152-2153)Over 90% of ankle ligament injuries (twisted ankle or ankle sprain) involve the lateral ligament complex, usually the anterior tibiofibular ligament.Ankle LigamentsMedial Collateral LigamentLateral Collateral Ligament* Also known as deltoid ligamentQ* It is a strong ligament and major stabilizer of the ankle jointQ.* Two components:- Superficial: Resist eversion of hind footQ (Talo-tibial, naviculo- tibial, calcanio-tibial)- Deep (Intra-articular): Prevents external rotation of talus (Anterior and posterior talotibial)Q* It is a weak ligament, so involved in over 90% of ankle ligament injuriesQ* It has three parts:- Anterior talofibular: MC injuredQ- Middle calcaneofibular: 2nd MC injuredQ- Posterior talofibular: Torn in most severe injuries
Anterior talofibular ligament
Posterior talofibular ligament
Calcaneofibular ligament
Posterior fibres of deltoid
Injuries of the Ankle