Final answer:
Ultrasonography is more accurate in diagnosing inversion ankle sprain tears, which commonly occur when the foot turns inward excessively, damaging the lateral ankle ligaments.
Step-by-step explanation:
The diagnostic accuracy of ultrasonography in evaluating ankle injury is higher for inversion ankle sprain tears. An inversion ankle sprain occurs when excess inversion, or inward turning of the foot, causes the talus bone to tilt laterally, thereby injuring the ligaments on the lateral side of the ankle. The anterior talofibular ligament is the most frequently injured, followed by the calcaneofibular ligament. In severe cases, this lateral movement of the talus not only ruptures lateral ankle ligaments but can also lead to a fracture of the distal fibula.