Hip and Knee Arthroplasty - Surface Hippy Guide to Hip Resurfacing

Table HG4:
Primary Hip Replacement requiring Revision
Type of Hip
Replacement
Number
Revised
Total
Number
Observed
Component
Years
Revisions per
100 Observed
Component
Years
Exact 95%
CI
Partial Hip 970 32092 66115 1.5 (1.38, 1.56)
Unipolar Monoblock 580 16503 32729 1.8 (1.63, 1.92)
Unipolar Modular 168 7404 12742 1.3 (1.13, 1.53)
Bipolar 222 8177 20631 1.1 (0.94, 1.23)
Partial Resurfacing 0 8 12 0.0 (0.00, 30.76)
Conventional Total 3145 125004 388461 0.8 (0.78, 0.84)
Cemented 380 15864 57336 0.7 (0.60, 0.73)
Cementless 1779 66736 195750 0.9 (0.87, 0.95)
Hybrid 986 42404 135374 0.7 (0.68, 0.78)
Total Resurfacing 340 10623 32455 1.0 (0.94, 1.17)
Thrust Plate 4 172 672 0.6 (0.16, 1.52)
Total 4459 167891 487703 0.9 (0.89, 0.94)
Table HG5:
Yearly Cumulative Percent Revision of Primary Hip Replacement
CPR 1 Yr 2 Yrs 3 Yrs 5 Yrs 7 Yrs
Partial Hip 2.4 (2.3, 2.6) 3.5 (3.3, 3.7) 4.1 (3.8, 4.4) 5.2 (4.8, 5.6) 5.9 (5.4, 6.4)
Unipolar Monoblock 3.0 (2.7, 3.3) 4.3 (3.9, 4.7) 5.0 (4.6, 5.5) 6.2 (5.6, 6.8) 6.8 (6.0, 7.6)
Unipolar Modular 1.7 (1.4, 2.1) 2.7 (2.3, 3.2) 3.3 (2.7, 3.9) 5.0 (4.1, 6.2) 6.8 (5.2, 8.9)
Bipolar 2.1 (1.8, 2.4) 2.8 (2.4, 3.3) 3.1 (2.7, 3.6) 4.0 (3.4, 4.6) 4.2 (3.6, 4.9)
Partial Resurfacing 0
Conventional Total 1.5 (1.4, 1.6) 2.1 (2.0, 2.2) 2.5 (2.5, 2.6) 3.4 (3.2, 3.5) 4.2 (4.0, 4.4)
Cemented 1.1 (1.0, 1.3) 1.6 (1.4, 1.9) 2.1 (1.9, 2.4) 3.1 (2.8, 3.5) 3.8 (3.3, 4.3)
Cementless 1.7 (1.6, 1.8) 2.3 (2.2, 2.5) 2.8 (2.7, 3.0) 3.6 (3.4, 3.8) 4.4 (4.1, 4.8)
Hybrid 1.4 (1.3, 1.5) 1.9 (1.8, 2.0) 2.3 (2.1, 2.5) 3.1 (2.9, 3.3) 3.9 (3.6, 4.2)
Total Resurfacing 1.9 (1.7, 2.2) 2.6 (2.3, 2.9) 3.1 (2.8, 3.5) 4.4 (3.9, 5.0) 5.4 (4.6, 6.2)
Thrust Plate 1.2 (0.3, 4.7) 1.2 (0.3, 4.7) 1.9 (0.6, 6.0) 3.0 (1.1, 7.9) 3.0 (1.1, 7.9)
Note:
Cumulative Percent Revision equal to zero indicates that the procedure type has been followed up to this time with no
revisions recorded.
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