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Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing

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Table KT20:<br />

Primary Total <strong>Knee</strong> Replacement requiring Revision by Fixation (excluding<br />

cementless Genesis Oxinium <strong>and</strong> Profix Oxinium)<br />

Form Cement<br />

Number<br />

Revised<br />

Total Number<br />

Observed<br />

Component<br />

Years<br />

Revisions per<br />

100 Observed<br />

Component<br />

Years<br />

Exact 95%<br />

CI<br />

Cemented 1926 82856 242857 0.8 (0.76, 0.83)<br />

Cementless 952 38633 115961 0.8 (0.77, 0.87)<br />

Hybrid 1079 43007 135852 0.8 (0.75, 0.84)<br />

Total 3957 164496 494671 0.8 (0.78, 0.83)<br />

Note:<br />

Cementless Genesis Oxinium <strong>and</strong> Profix Oxinium have higher than anticipated revision rates that increase the<br />

cementless revision rates overall.<br />

Figure KT14:<br />

Cumulative Percent Revision of Primary Total <strong>Knee</strong> Replacement by<br />

Fixation (excluding cementless Genesis Oxinium <strong>and</strong> Profix Oxinium)<br />

Number at Risk 0 Yr 1 Yr 2 Yrs 3 Yrs 4 Yrs 5 Yrs 6 Yrs 7 Yrs<br />

Cemented 82856 65641 50267 36738 25147 15555 7366 1858<br />

Cementless 38633 31211 24435 18067 12416 7196 3012 793<br />

Hybrid 43007 35719 28372 21196 14957 9243 4125 1062<br />

Table KT21:<br />

Yearly Cumulative Percent Revision of Primary Total <strong>Knee</strong> Replacement<br />

by Fixation (excluding cementless Genesis Oxinium <strong>and</strong> Profix Oxinium)<br />

CPR 1 Yr 2 Yrs 3 Yrs 5 Yrs 7 Yrs<br />

Cemented 1.0 (0.9, 1.1) 2.0 (1.9, 2.1) 2.6 (2.5, 2.8) 3.5 (3.4, 3.7) 4.3 (4.0, 4.6)<br />

Cementless 1.1 (1.0, 1.2) 2.2 (2.1, 2.4) 2.8 (2.6, 3.0) 3.5 (3.3, 3.7) 4.1 (3.7, 4.5)<br />

Hybrid 1.0 (0.9, 1.1) 2.0 (1.9, 2.2) 2.7 (2.5, 2.8) 3.6 (3.4, 3.8) 4.1 (3.8, 4.5)<br />

153

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