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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 HG8:<br />

Primary Total <strong>Resurfacing</strong> <strong>Hip</strong> Replacement requiring Revision by Primary<br />

Diagnosis<br />

Primary Diagnosis<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% CI<br />

Avascular Necrosis 11 217 771 1.4 (0.71, 2.55)<br />

Developmental Dysplasia 24 321 1047 2.3 (1.47, 3.41)<br />

Osteoarthritis 299 9983 30299 1.0 (0.88, 1.11)<br />

Other Inflamma<strong>to</strong>ry Arthritis 3 48 177 1.7 (0.35, 4.95)<br />

Rheuma<strong>to</strong>id Arthritis 3 45 132 2.3 (0.47, 6.67)<br />

Other (4) 0 9 29 0.0 (0.00, 12.74)<br />

Total 340 10623 32455 1.0 (0.94, 1.17)<br />

Figure HG5:<br />

Cumulative Percent Revision of Primary Total <strong>Resurfacing</strong> <strong>Hip</strong> Replacement<br />

by Primary Diagnosis<br />

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

Avascular Necrosis 217 189 171 134 97 56 17 2<br />

Developmental Dysplasia 321 278 220 179 121 69 18 4<br />

Osteoarthritis 9983 8252 6551 4822 3283 1901 679 83<br />

Table HG9:<br />

Yearly Cumulative Percent Revision of Primary Total <strong>Resurfacing</strong> <strong>Hip</strong><br />

Replacement by Primary Diagnosis<br />

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

Avascular Necrosis 2.9 (1.3, 6.3) 4.5 (2.4, 8.5) 5.1 (2.8, 9.3) 6.1 (3.3, 10.9)<br />

Developmental Dysplasia 2.9 (1.5, 5.6) 4.2 (2.4, 7.3) 6.9 (4.4, 10.8) 12.0 (7.6, 18.6)<br />

Osteoarthritis 1.9 (1.6, 2.2) 2.5 (2.2, 2.8) 2.9 (2.6, 3.3) 4.1 (3.6, 4.7) 5.0 (4.2, 5.8)<br />

Other Inflamma<strong>to</strong>ry Arthritis 2.2 (0.3, 14.4) 2.2 (0.3, 14.4) 2.2 (0.3, 14.4) 7.1 (1.6, 27.8)<br />

Rheuma<strong>to</strong>id Arthritis 4.7 (1.2, 17.4) 7.9 (2.6, 23.1) 7.9 (2.6, 23.1) 7.9 (2.6, 23.1)<br />

23

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