30.12.2014 Views

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

PRIMARY PARTIAL KNEE REPLACEMENT<br />

1/9/1999 – 31/12/2007<br />

Primary Unispacer <strong>Knee</strong> Replacement<br />

Table KP1:<br />

Primary Unispacer <strong>Knee</strong> Replacement requiring Revision<br />

Unispacer<br />

Number<br />

Revised<br />

Total<br />

Number<br />

Observed<br />

Component<br />

Years<br />

Revisions per<br />

100 Observed<br />

Component<br />

Years<br />

Exact 95%<br />

CI<br />

InterCushion 9 9 8 110.8 (50.64, 210.3)<br />

UniSpacer 17 30 64 26.5 (15.43, 42.41)<br />

Total 26 39 72 36.0 (23.49, 52.69)<br />

Figure KP1:<br />

Cumulative Percent Revision of Primary Unispacer <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 />

Primary Unispacer 39 22 14 12 5 0 0 0<br />

Table KP2:<br />

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

Replacement<br />

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

InterCushion 55.6 (28.1, 86.4) 100<br />

UniSpacer 40.0 (25.0, 59.5) 53.3 (37.0, 71.6) 56.7 (40.1, 74.4)<br />

Primary Unispacer 43.6 (29.8, 60.4) 64.1 (49.4, 78.6) 66.7 (52.0, 80.7)<br />

120

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!