Grades of Severity

Structural Damage

Loss of Function

Joint Stability (Sprains Only)

First Degree (mild)

Minimal - structure mostly intact

Minimal - early resolution

Minimal - No instability

Second Degree (moderate)

Partial tear; large spectrum of injury; few to most fibers torn

Significant early loss, especially when more fibers torn

Mild to moderate instability

Third Degree (severe)

Complete tear; rupture

Severe/complete loss of function of involved structure

Significant instability