grade III sprain

Full Definition

The most severe classification of ligament injury involving complete tearing or rupture of the ligament fibers, resulting in significant joint instability and loss of function. Grade III sprains typically present with severe pain, extensive swelling, bruising, and marked joint laxity on examination. Unlike Grade I (mild stretching) and Grade II (partial tearing) sprains, Grade III injuries often require surgical intervention to restore joint stability, particularly in high-level athletes. Recovery time is typically the longest among sprain classifications.

Usage

Usage note: Use Roman numerals (Grade III) rather than Arabic numerals in formal documentation.

In Context

• "Physical examination revealed a grade III sprain of the lateral collateral ligament." — Clinical assessment
• "The athlete suffered a grade III ankle sprain requiring surgical reconstruction." — Injury report