The most common signs and symptoms include ankle or foot pain, tissue or joint swelling, tenderness, inability to support weight, and limited range of motion. Rupture of multiple ligaments can cause more severe and chronic pain, swelling, and instability.
About half of all cases occur during athletic activity. Ankle sprains may be caused by blunt trauma, falling, or twisting or rolling of the ankle. Additional contributing factors include improper footwear and overuse.
Ankle sprains can be categorized as grade 1, 2, or 3 depending on the degree of tear of ligament, although grade does not always correlate with time to healing.
Related topics: syndesmosis injury, ankle fracture
S93.409A – Sprain of unspecified ligament of unspecified ankle, initial encounter
44465007 – Sprain of ankle
Differential Diagnosis & Pitfalls