Final answer:
In an inversion ankle sprain, the anterior talofibular ligament is the most commonly injured, followed by the calcaneofibular ligament. Severe sprains may also result in fractures of the distal fibula. The deltoid ligament can be injured in eversion sprains, potentially leading to more severe injuries.
Step-by-step explanation:
The most commonly injured ligaments when rolling your ankle are those on the lateral side due to an inversion ankle sprain. This type of sprain occurs when there is excess inversion, or inward rolling, of the foot, which can stretch or tear ligaments. The sequence of ligament injuries typically begins with the anterior talofibular ligament, followed by the calcaneofibular ligament. The lateral movement of the talus bone causes these injuries. If the inversion force is severe, it may also rupture these ligaments and potentially fracture the distal fibula.
Less commonly injured is the deltoid ligament on the medial side, which resists excessive eversion of the foot. Injuries here could lead to a Pott's fracture and dislocation of the ankle joint. Knowledge of these ligament injuries can help in understanding ankle sprain treatment and recovery processes.