Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing
Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing
Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing
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Table KT14:<br />
Primary Total <strong>Knee</strong> Replacement requiring Revision by Bearing Mobility<br />
Bearing<br />
Mobility<br />
Number<br />
Revised<br />
Total<br />
Number<br />
Observed<br />
Component<br />
Years<br />
Revisions per 100<br />
Observed<br />
Component Years<br />
Exact 95%<br />
CI<br />
Fixed 2657 117540 352899 0.8 (0.72, 0.78)<br />
Rotating 1227 41461 120553 1.0 (0.96, 1.08)<br />
Sliding 42 956 5355 0.8 (0.57, 1.06)<br />
Rotating - Sliding 157 4704 16388 1.0 (0.81, 1.12)<br />
Unknown 4 103 316 1.3 (0.34, 3.24)<br />
Total 4087 164764 495511 0.8 (0.80, 0.85)<br />
Figure KT11:<br />
Cumulative Percent Revision of Fixed Bearing <strong>and</strong> Mobile Bearing<br />
Primary Total <strong>Knee</strong> Replacement<br />
Number at Risk 0 Yr 1 Yr 2 Yrs 3 Yrs 4 Yrs 5 Yrs 6 Yrs 7 Yrs<br />
Fixed 117540 94821 73507 53939 37442 22800 10343 2672<br />
Mobile 47121 37896 29657 22150 15180 9216 4155 1039<br />
Note:<br />
Mobile is the combination of the Rotating, Rotating-Sliding <strong>and</strong> Sliding groups.<br />
Table KT15:<br />
Yearly Cumulative Percent Revision of Fixed Bearing <strong>and</strong> Mobile<br />
Bearing Primary Total <strong>Knee</strong> Replacement<br />
CPR 1 Yr 2 Yrs 3 Yrs 5 Yrs 7 Yrs<br />
Fixed 1.0 (0.9, 1.0) 1.9 (1.9, 2.0) 2.5 (2.4, 2.6) 3.3 (3.2, 3.4) 4.0 (3.8, 4.2)<br />
Mobile 1.2 (1.1, 1.3) 2.6 (2.4, 2.7) 3.4 (3.2, 3.5) 4.5 (4.2, 4.7) 5.1 (4.8, 5.5)<br />
.<br />
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