Table A5.
Implant-specific patellofemoral contact loads measured during stair descent.
| Cycle (%) | M-L Load (N) | A-P Load (N) | S-I Load (N) | Resultant (N) | Cycle (%) | M-L Load (N) | A-P Load (N) | S-I Load (N) | Resultant (N) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 9.6 | 120.0 | 7.9 | 137.5 | 51 | −5.7 | 68.0 | 13.3 | 75.6 |
| 2 | 5.8 | 92.9 | 6.5 | 105.2 | 52 | −7.3 | 83.7 | 20.5 | 96.9 |
| 3 | 3.4 | 75.2 | 5.3 | 83.9 | 53 | −8.8 | 101.1 | 28.3 | 120.6 |
| 4 | 1.5 | 61.9 | 3.8 | 67.2 | 54 | −10.1 | 121.5 | 37.1 | 148.5 |
| 5 | −0.2 | 50.4 | 2.0 | 52.2 | 55 | −11.0 | 144.8 | 46.8 | 180.6 |
| 6 | −1.4 | 43.7 | 0.8 | 43.1 | 56 | −11.0 | 169.7 | 56.5 | 215.2 |
| 7 | −1.9 | 43.5 | 1.1 | 42.7 | 57 | −9.8 | 196.2 | 66.2 | 252.6 |
| 8 | −2.0 | 47.0 | 2.1 | 47.1 | 58 | −7.3 | 225.2 | 76.0 | 293.9 |
| 9 | −2.0 | 49.0 | 2.8 | 49.8 | 59 | −3.3 | 255.6 | 85.3 | 337.6 |
| 10 | −2.1 | 47.5 | 2.5 | 47.9 | 60 | 1.9 | 286.9 | 94.3 | 383.1 |
| 11 | −2.2 | 44.0 | 1.5 | 43.3 | 61 | 8.2 | 320.7 | 103.4 | 432.3 |
| 12 | −2.2 | 40.8 | 0.5 | 39.1 | 62 | 15.4 | 357.2 | 113.1 | 485.7 |
| 13 | −2.2 | 39.2 | 0.0 | 37.0 | 63 | 23.8 | 396.0 | 124.0 | 543.8 |
| 14 | −2.1 | 38.8 | −0.1 | 36.6 | 64 | 32.8 | 435.7 | 136.0 | 604.5 |
| 15 | −2.0 | 38.9 | −0.1 | 36.8 | 65 | 41.6 | 472.9 | 147.8 | 662.3 |
| 16 | −1.9 | 39.0 | −0.1 | 37.0 | 66 | 49.5 | 504.9 | 157.6 | 712.0 |
| 17 | −1.8 | 39.1 | 0.0 | 37.3 | 67 | 56.7 | 532.3 | 164.6 | 753.6 |
| 18 | −1.7 | 39.1 | 0.0 | 37.4 | 68 | 63.8 | 555.0 | 167.9 | 786.7 |
| 19 | −1.7 | 39.1 | 0.0 | 37.4 | 69 | 71.1 | 572.4 | 167.2 | 810.7 |
| 20 | −1.7 | 39.1 | 0.0 | 37.4 | 70 | 78.1 | 585.7 | 163.6 | 827.4 |
| 21 | −1.7 | 39.1 | 0.0 | 37.4 | 71 | 83.7 | 597.7 | 158.6 | 840.0 |
| 22 | −1.7 | 39.2 | 0.0 | 37.5 | 72 | 86.1 | 610.4 | 153.6 | 850.1 |
| 23 | −1.6 | 39.3 | 0.1 | 37.8 | 73 | 84.2 | 619.9 | 148.0 | 852.1 |
| 24 | −1.6 | 39.2 | 0.0 | 37.6 | 74 | 79.9 | 614.9 | 138.3 | 833.1 |
| 25 | −1.6 | 39.1 | 0.0 | 37.5 | 75 | 76.2 | 595.6 | 123.4 | 795.2 |
| 26 | −1.6 | 39.1 | 0.0 | 37.5 | 76 | 73.8 | 574.1 | 104.7 | 752.6 |
| 27 | −1.6 | 39.0 | −0.1 | 37.3 | 77 | 72.0 | 555.6 | 83.4 | 711.0 |
| 28 | −1.6 | 39.0 | −0.1 | 37.3 | 78 | 68.0 | 528.9 | 60.6 | 657.5 |
| 29 | −1.6 | 39.1 | −0.1 | 37.4 | 79 | 60.3 | 483.3 | 40.1 | 583.7 |
| 30 | −1.7 | 39.1 | −0.1 | 37.3 | 80 | 50.3 | 422.9 | 26.2 | 499.4 |
| 31 | −1.9 | 39.2 | −0.1 | 37.2 | 81 | 40.2 | 367.3 | 21.1 | 428.6 |
| 32 | −2.1 | 39.4 | −0.1 | 37.2 | 82 | 32.7 | 336.6 | 22.2 | 391.5 |
| 33 | −2.2 | 39.5 | −0.1 | 37.2 | 83 | 28.8 | 331.1 | 24.9 | 384.8 |
| 34 | −2.2 | 39.7 | −0.1 | 37.4 | 84 | 27.8 | 342.2 | 27.4 | 397.4 |
| 35 | −2.2 | 39.8 | −0.1 | 37.5 | 85 | 28.3 | 362.0 | 29.6 | 419.9 |
| 36 | −2.2 | 40.0 | −0.1 | 37.7 | 86 | 29.3 | 385.6 | 31.7 | 446.6 |
| 37 | −2.1 | 40.2 | −0.1 | 38.0 | 87 | 30.4 | 410.3 | 33.5 | 474.2 |
| 38 | −2.1 | 40.3 | −0.1 | 38.1 | 88 | 31.1 | 432.2 | 34.0 | 497.3 |
| 39 | −2.0 | 40.4 | −0.1 | 38.3 | 89 | 31.4 | 445.1 | 31.3 | 507.8 |
| 40 | −2.0 | 40.5 | −0.1 | 38.4 | 90 | 31.4 | 445.6 | 24.8 | 501.8 |
| 41 | −2.0 | 40.5 | −0.1 | 38.4 | 91 | 31.3 | 433.6 | 16.5 | 481.4 |
| 42 | −2.0 | 40.5 | −0.1 | 38.4 | 92 | 31.6 | 414.5 | 10.5 | 456.6 |
| 43 | −2.1 | 40.5 | −0.1 | 38.3 | 93 | 31.9 | 392.6 | 7.9 | 432.4 |
| 44 | −2.1 | 40.2 | −0.1 | 38.0 | 94 | 32.2 | 370.2 | 7.4 | 409.8 |
| 45 | −2.1 | 39.8 | −0.3 | 37.4 | 95 | 31.8 | 344.7 | 7.8 | 384.3 |
| 46 | −2.1 | 39.1 | −0.5 | 36.5 | 96 | 29.9 | 310.1 | 8.3 | 348.3 |
| 47 | −2.2 | 38.8 | −0.6 | 36.0 | 97 | 26.7 | 269.0 | 9.0 | 304.7 |
| 48 | −2.4 | 40.0 | 0.1 | 37.7 | 98 | 22.9 | 229.9 | 9.8 | 262.6 |
| 49 | −3.1 | 44.9 | 2.5 | 44.3 | 99 | 18.8 | 192.5 | 10.1 | 221.4 |
| 50 | −4.3 | 54.5 | 7.0 | 57.2 | 100 | 14.1 | 154.9 | 9.3 | 178.3 |