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Table 3.
Comparison of functional outcome in the two contemporary high flexion knee designs.
| Mean ROM | FFD | Mean WOMAC score | Mean modified Oxford score | Knee alignment |
|||||
|---|---|---|---|---|---|---|---|---|---|
| Varus | Normal | Valgus | Mean | ||||||
| Depuy | Pre-op | 94.6° (r = 60–150°) | 57% (m = 4° r = 5–20°) | 63 (r = 55–73) | 13 (r = 8–19) | 62% | 38% | 0 | 6° varus (r = 5° valgus–30° varus) |
| Post-op | 134.6° (r = 110–145°) | 0 | 3.5 (r = 1–8) | 45.6 (r = 34–48) | 0 | 100% | 0 | 5.3° valgus (r = 4° –10° valgus) | |
| Zimmer | Pre-op | 95.2° (r = 50–140°) | 55% (m = 4.25° r = 5–30°) | 63.5 (r = 55–73) | 12.7 (r = 8–19) | 74% | 26% | 0 | 7.6° varus (r = 10° valgus–40° varus) |
| Post-op | 133.4° (r = 115–145°) | 0 | 4.65 (r = 1–8) | 39.9 (r = 32–48) | 0 | 100% | 0 | 5.2° valgus (r = 4° –12° valgus) | |
Pre-op = pre-operative, Post-op = post-operative, ROM = range of motion, FFD = fixed flexion deformity, m = mean, r = range.
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