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Table 2 Mean clinical outcome parameters

From: 5-year clinical and radiographic follow-up of the uncemented Symax hip stem in an international study

  Preoperative 6 months 1 year 2 years 3 years 5 years
Mean HHS (± SD) 58.9 (12.0) 94.3 (9.1) 95.2 (10.5) 96.1 (8.7) 97.4 (7.7) 98.1 (6.1)
Wilcoxon (P value)   < 0.001 0.074 0.121 0.015 0.482
Mean OHS (± SD) 38.5 (6.0) 20.0 (9.4) 18.7 (8.1) 17.4 (7.7) 16.0 (7.1) 16.2 (6.4)
Wilcoxon (P value)   < 0.001 0.028 0.072 0.012 0.081
Mean WOMAC (± SD) 48.2 (13.7) 13.0 (14.5) 10.8 (13.7) 9.7 (13.4) 9.0 (13.7) 6.9 (9.9)
Wilcoxon (P value)   < 0.001 0.019 0.673 0.181 0.125
  1. Mean HHS, OHS, and WOMAC with standard deviation (SD) and Wilcoxon ranked sign test evaluating improvement over time between two consecutive follow-up moments