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Table 2 Summary of results

From: A comparison of femoral tunnel placement in ACL reconstruction using a 70° arthroscope through the anterolateral portal versus a 30° arthroscope through the anteromedial portal: a pilot 3D-CT study

 70° arthroscope view from anterolateral portal
(Group 1)
30° arthroscope view from anteromedial portal
(Group 2)
P value
Position
 Depth (mean % DS ± SD)33.3 ± 6.031.7 ± 6.9n.s.
 Height (mean % HL ± SD)27.2 ± 5.229.0 ± 6.2n.s.
Accuracy (% distance from TC to AC)7.09.0n.s.
 Number (%) within 5%10 (33%)3 (18%)n.s
 Number (%) within 10%23 (77%)9 (53%)n.s.
 Number (%) within 15%29 (97%)16 (94%)n.s.
Precision (SD of % absolute differences)3.73.8n.s.
  1. AC aperture centre, DS deep–shallow, HL high–low, n.s. not significant, SD standard deviation, TC true centre