Table 1 The knee society-based knee and function scores
Parameter | Points | Parameter | Points |
|---|---|---|---|
Pain | Functions | ||
None | 50 | Walking | |
Mild or occasional | 45 | Unlimited | 50 |
Stairs only | 40 | >10 blocks | 40 |
Walking and stairs | 30 | 5–10 blocks | 30 |
Moderate | <5 blocks | 20 | |
Occasional | 20 | Housebound | 10 |
Continual | 10 | Inability to walk | 0 |
Severe | 0 | Stairs | |
Range of motion | Normal up and down | 50 | |
5° = 1 point | 25 | Normal up; down holding rail | 40 |
Stability | Up and down holding rail | ||
Anteroposterior | Up holding rail; inability to walk down | 30 | |
<5 mm | 10 | Inability to climb stairs | 15 |
5–10 mm | 5 | Subtotal | _ |
10 mm | 0 | Deductions (minus) | |
Mediolateral | Cane | 5 | |
<5° | 15 | 2 canes | 10 |
6°–9° | 10 | Crutches or walker | 20 |
10°–14° | 5 | Total deductions | _ |
15° | 0 | Function score | _ |
Deductions (minus) | |||
Flexion contracture | |||
5°–10° | 2 | ||
10°–15° | 5 | ||
15°–20° | 10 | ||
>20° | 15 | ||
Extension lag | |||
<10° | 5 | ||
10°–20° | 10 | ||
>20° | 15 | ||
Alignment | |||
5°–10° | 0 | ||
0°–4° | 3 points per degree | ||
11°–15° | 3 points per degree | ||
Other | 20 | ||
Total deductions | |||
Knee score | |||
(if total is a negative number, score is 0) | |||