Athletic Training Practice Exam

A grade 1 ankle inversion sprain primarily affects which ligament?

1. Tibiofibular ligament

2. Calcaneofibular ligament

3. Anterior talofibular ligament

4. Spring ligament

The correct answer is: Anterior talofibular ligament

A grade 1 ankle inversion sprain primarily affects the anterior talofibular ligament (ATFL). This ligament is located on the lateral side of the ankle and plays a crucial role in stabilizing the joint, particularly during activities involving inversion, such as walking or running on uneven surfaces. In a grade 1 sprain, there is typically a mild stretching of the ligament without any significant tearing or instability. While other ligaments, such as the calcaneofibular ligament and tibiofibular ligament, are also involved in ankle stability, they are generally associated with more severe injuries or different types of ankle sprains. The spring ligament is primarily related to the medial aspect of the foot and does not play a role in ankle inversion injuries. Thus, the anterior talofibular ligament is the primary structure affected in this scenario, making it the correct choice.