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Table 3 Results of IR and ESR measurements of explanted UHMWPE components

From: Quantification of structural changes of UHMWPE components in total joint replacements

Sample Location of sample Years in vivo Oxidation indices, various sites VI range FRC (mol/g)
    OI inner OI middle OI outer   
L1 Unworn 11 1.79 0.08 0.85 0.010–0.016 1.4e-10
  Worn 2.37 0.09 0.98
L2 Unworn 20 0.43 0.19 0.28 0.014–0.020 5.0e-10
  Worn 1.52 0.22 0.89
L3 Unworn 16 0.64 0.06 0.34 0.008–0.012 1.4e-10
  Worn 1.55 0.06 0.49
L4 Unworn 10 6.62 1.35 2.50 0.012–0.018 5.2e-10
  Worn 2.14 1.52 2.34