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Table 6 Deviation between planed and postoperative angles as well as outliers exceeding 5° evaluating each surgeon, comparing computer-assisted surgery (CAS) vs. the conventional group (mean ± SD)

From: Effect of surgical experience on imageless computer-assisted femoral component positioning in hip resurfacing – a preclinical study

  Surgeon A Surgeon B Surgeon C
  CAS Conventional CAS Conventional CAS Conventional
Time 24 ± 5 min 19 ± 6 min 15 ± 3 min 12 ± 3 min 14 ± 2 min 12 ± 3 min
AP plane
Deviation (°) 1.0 ± 1.1 11.1 ± 4.4 1.6 ± 2.7 3.6 ± 1.5 0.6 ± 0.5 7.4 ± 3.1
Outliers 0 8 (88.9%) 1 (11.1%) 1 (11.1%) 0 6 (66.7%)
Axial plane
Deviation (°) 5.2 ± 3.1 5.8 ± 3.9 3.2 ± 2.8 4.1 ± 2.9 3.1 ± 2.5 5.3 ± 2.6
Outliers 5 (55.6%) 4 (44.4%) 2 (22.2%) 4 (44.4%) 1 (11.1%) 4 (44.4%)
Notching 0 5 (55.6%) 0 2 (22.2%) 0 1 (11.1%)
  1. SCFE, Slipped capital epiphysis.