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Table 4 Patient Reported Outcomes with one year follow up. Calculated per protocol

From: No added value for Computer-Assisted surgery to improve femoral component positioning and Patient Reported Outcomes in Hip Resurfacing Arthroplasty; a multi-center randomized controlled trial

  Baseline Six weeks Three months One year P-value (LMM)
CAS Conventional CAS Conventional CAS Conventional CAS Conventional  
VAS   5.7 (1.9) 5.4 (2.0) 1.3 (2.0) 1.3 (1.8) 0.8 (1.3) 0.8 (1.3) 0.4 (1.0) 0.5 (1.2) 0.688
HOOS Pain 38.4 (13.0) 40.5 (15.4) 81.1 (15.5) 79.2 (13.3) 87.0 (15.6) 86.5 (14.7) 91.1 (11.2) 88.0 (16.7) 0.432
Other symptoms 35.0 (14.4) 35.7 (14.2) 67.2 (16.7) 69.0 (15.5) 72.5 (16.1) 72.2 (16.1) 74.5 (18.0) 75.9 (19.6) 0.914
Activities of daily living 38.2 (14.9) * 42.7 (16.4) * 72.8 (17.3) 71.2 (13.5) 83.2 (17.6) 82.2 (15.2) 89.6 (11.7) 87.3 (16.3) 0.333
Sport 16.6 (14.0) ** 22.8 (18.3) ** 53.6 (29.2) 46.2 (25.6) 69.9 (26.0) 65.8 (25.6) 73.8 (24.2) 76.6 (23.2) 0.444
Hip-related QoL 21.7 (12.3) 24.5 (11.7) 51.9 (16.1) 48.4 (16.7) 66.5 (20.2) 59.6 (17.9) 71.9 (14.6) 69.0 (20.9) 0.309
HHS Total 57.1 (10.6) 60.6 (10.6) 79.1 (16.6) 80.2 (11.5) 91.0 (12.8) 93.7 (8.7) 96.3 (7.1) 97.8 (4.0) 0.537
  1. CAS Computer-Assisted-Surgery, LMM linear mixed-model, VAS visual analogue scale. HOOS=Hip disability and Osteoarthritis Outcome Scale (HOOS). HHS=Harris Hip Score. All data are presented as means (SD). * significant difference (p = 0.028). ** significant difference (p = 0.021)