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Table 2 Anatomic parameters of the PCL tibial attachment among the three age groups in malesa

From: MRI analysis of tibial PCL attachment in a large population of adult patients: reference data for anatomic PCL reconstruction

Variable Mean ± Standard Deviation P
The Young (n = 145) The Middle-aged (n = 170) The Old (n = 64) Total The Young vs the Middle-aged The Young vs the Old The Middle-aged vs the Old
APD, mm 36.2 ± 3.0 35.4 ± 3.0 34.3 ± 2.9 .000 .021 .000 .010
α, ° 120.9 ± 7.5 123.7 ± 8.2 123.4 ± 7.7 .005 .002 .035 .796
PTS, mm 24.4 ± 3.7 23.2 ± 3.5 22.8 ± 3.1 .003 .005 .004 .407
L1, mm 14.6 ± 3.2 14.0 ± 3.1 13.9 ± 3.2 .144 .072 .145 .920
L2, mm 19.5 ± 3.2 18.6 ± 3.0 18.4 ± 2.9 .014 .012 .016 .600
L3, mm 10.6 ± 2.4 10.0 ± 2.6 9.3 ± 2.3 .002 .027 .001 .077
L1/PTS, % 60.0 ± 9.0 60.2 ± 9.8 60.8 ± 9.6 .836 .822 .550 .661
L2/PTS, % 80.0 ± 4.5 80.1 ± 4.9 80.4 ± 4.8 .836 .822 .550 .661
L3/PTS, % 43.8 ± 9.1 43.1 ± 10.5 41.1 ± 10.0 .203 .532 .075 .179
L4, mm 16.7 ± 3.5 15.4 ± 3.3 15.3 ± 3.3 .002 .001 .007 .801
  1. aAPD anterior-posterior diameter, α the angle between the tibial plateau and the posterior tibial ‘shelf’, PTS posterior tibial ‘shelf’, L1 distance from the proximal position of the tibial PCL attachment to the tibial plateau, L2 distance from the central position of the tibial PCL attachment to the tibial plateau, L3 width of the tibial PCL attachment site, L4 the vertical dimension of the PCL attachment site from the center of the PCL attachment perpendicularly to a line along the tibial plateau