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Table 3 The prevalence of distinct failure patterns in the study cohort

From: Sex differences in the morphological failure patterns following hip resurfacing arthroplasty

   entire study cohort n = 204 entire study cohort n = 204 valid data on sex n = 173
    unknown sex n = 31 valid data on sex n = 173 men n = 88 women n = 85
cause for revision periprosthetic fracture 133 19 114 65 49
  non-fractural cause 71 12 59 23 36
    P = 0.683 P = 0.026
periprosthetic fracture pattern postnecrotic biomechanic 73 60 9 10 64 50 41 24 23 26
    P = 0.619 P = 0.086
osteonecrosis present 174 23 151 80 71
  absent 30 8 22 8 14
    P = 0.093 P = 0.151
extent of osteonecrosis [mm] 7.4, 6.4, 7.6, 15.3, 6.2,
   2.9 to 19.5 2.1 to 6.8 3.1 to 21.3 3.6 to 24.2 2.6 to 14.6
    P = 0.171 P = 0.008
non-fractural causes Loosening of the acetabular component 15 1 14 4 10
  Loosening of the femoral component 10 3 7 2 5
  cement-socket debonding 3 0 3 2 1
  Collapsed osteonecrosis 5 2 3 0 3
  Metallosis 2 1 1 0 1
  Unexplained groin pain 36 5 31 14 17
    P = 0.249 P = 0.417
unexplained groin pain excessive lymphocyte infiltration 14 3 11 1 10
    P = 0.451 P = 0.021
  interface hyperosteoidosis 37 7 30 8 22
    P = 0.457 P = 0.005