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Table 5 Spearman rho correlation coefficients and associated p-values for correlations between total wear volume, wear rate, indirect markers of wear (whole blood and synovial fluid metal ion concentrations) and histopathological grading (Natu and ALVAL)

From: Analysis of bearing wear, whole blood and synovial fluid metal ion concentrations and histopathological findings in patients with failed ASR hip resurfacings

  Natu grading ALVAL grading
  Lymphocytic cuffing Macrophage sheet thickness Grade of necrosis Inflammatory infiltrate score Synovial lining score Tissue organization score Total ALVAL score
Total wear volume rho = 0.11
p = 0.32
rho = 0.25*
p = 0.020
rho = 0.35*
p < 0.01
rho = 0.13
p = 0.23
rho = 0.37*
p < 0.01
rho = 0.25*
p = 0.023
rho = 0.31*
p < 0.01
Wear rate rho = 0.17
p = 0.12
rho = 0.20
p = 0.069
rho = 0.42*
p < 0.0001
rho = 0.16
p = 0.15
rho = 0.48*
p < 0.0001
rho = 0.35*
p < 0.01
rho = 0.40*
p < 0.001
WB Cr rho = 0.089
p = 0.51
rho = 0.30*
p = 0.024
rho = 0.45*
p < 0.001
rho = 0.19
p = 0.26
rho = 0.54*
p < 0.001
rho = 0.33*
p = 0.015
rho = 0.48*
p < 0.001
WB Co rho = 0.18
p = 0.18
rho = 0.29*
p = 0.029
rho = 0.51*
p < 0.001
rho = 0.26
p = 0.055
rho = 0.60*
p < 0.001
rho = 0.40*
p < 0.01
rho = 0.55*
p < 0.001
SF Cr rho = 0.30
p = 0.12
rho = 0.16
p = 0.40
rho = 0.48*
p < 0.01
rho = 0.25
p = 0.19
rho = 0.56*
p < 0.01
rho = 0.34
p = 0.070
rho = 0.53*
p < 0.01
SF Co rho = 0.49*
p < 0.01
rho = 0.17
p = 0.37
rho = 0.54*
p < 0.01
rho = 0.44*
p = 0.017
rho = 0.47*
p = 0.011
rho = 0.38*
p = 0.045
rho = 0.57*
p < 0.01
  1. Values that are statistically significant are flagged with *