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Table 1 Clinical and patient outcomes by follow-up

From: Mid-term outcomes of the R3™ delta ceramic acetabular system in total hip arthroplasty

   Preop 3 months 1 year 3 years 5 years 7 years
WOMAC
score
N 173 164 134 124 109 102
 Mean 62.6 13.6 8.0 9.3 10.1 9.6
 Std 15.5 11.0 11.4 11.9 13.4 11.5
 Range 22, 91 0, 57 0, 57 0, 57 0, 61 0, 50
WOMAC physical function score
N 174 164 134 124 110 102
 Mean 45.4 10.6 6.4 7.8 8.4 8.3
 Standard deviation 10.9 8.4 9.1 10.0 11.1 9.9
 Range 12, 65 0, 46 0, 43 0, 46 0, 51 0, 50
WOMAC pain score
N 173 164 134 124 111 102
 Mean 12.2 1.7 1.1 1.1 1.3 0.8
 Standard deviation 3.7 2.3 2.1 2.3 2.7 1.8
 Range 3, 20 0, 11 0, 12 0, 10 0, 13 0, 9
WOMAC stiffness score
N 174 164 134 124 112 102
 Mean 5.0 1.3 0.6 0.4 0.7 0.5
 Standard deviation 1.9 1.3 1.0 0.9 1.3 1.0
 Range 0, 8 0, 6 0, 5 0, 4 0, 8 0, 5
Modified Harris hip score
N 172 166 135 118 113 104
 Mean 44.8 83.4 91.0 91.6 92.3 92.0
 Standard deviation 12.1 13.5 12.2 12.1 11.1 11.1
 Range 10, 87 25, 100 42, 100 43, 100 54, 100 46, 100
UCLA activity rating scale score
N 175 167 134 124 112 102
 Mean 3.3 5.7 6.2 6.1 5.9 5.8
 Std 1.4 1.5 1.4 1.3 1.6 1.5
 Range 1, 8 2, 8 2, 8 2,8 2, 8 3, 8