Quadriceps contusion severity as described by Ryan et al29 30
| Severity | Symptoms | Degree of knee flexion |
|---|---|---|
| Mild | Normal gait, localised tenderness | Active knee flexion greater than 90° |
| Moderate | Antalgic gait, swollen, tender mass in the quadriceps | Active knee flexion between 45° and 90° |
| Severe | Severely antalgic gait, noticeably swollen, tender mass | Active knee flexion less than 45° |