Table 1.
HSS patella scoring system [6] developed by Baldini et al.
| Type of score | Variable | Score | Points | Maximum | Minimum |
|---|---|---|---|---|---|
| Subjective | Anterior knee pain | VAS score 0–10: 50—(5 × VAS score) | 50 | 0 | |
| How do you rate the pain on the front of your knee while rising from the low chair? | |||||
| Functional limitations | No functional limitations | 15 | 15 | 0 | |
| Limitation in one function | 10 | ||||
| Limitation in two functions | 5 | ||||
| Limitation in three functions | 0 | ||||
| Do you feel that anterior part of your knee is limiting you while: 1. Climbing stairs; 2. Descending stairs; 3. Sitting for prolonged time (30 min at 90°) | |||||
| Objective | Tenderness (Palpation of medial and/or lateral patellar retinaculum-facet) | Absent | 10 | 10 | 0 |
| Present | 0 | ||||
| Crepitus (during active ROM) | None | 15 | 15 | 0 | |
| Mild (for a limited ROM) | 10 | ||||
| Moderate (throughout entire ROM) | 5 | ||||
| Severe (catching/clunk) | 0 | ||||
| Quadriceps strength | Normal (5/5) | 10 | 10 | 0 | |
| Reduced (3–4/5) | 5 | ||||
| Deficient (1–2/5) | 0 | ||||
| Total | 100 | 0 | |||