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Table 3 Anatomic parameters of the PCL tibial attachment among the three age groups in femalesa

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 = 91)

The Middle-aged (n = 171)

The Old (n = 95)

Total

APD, mm

32.0 ± 2.5

31.4 ± 2.6

31.6 ± 2.9

.143

α, °

120.8 ± 8.4

122.2 ± 7.7

123.4 ± 9.1

.114

PTS, mm

21.0 ± 2.6

20.7 ± 2.9

21.2 ± 2.9

.383

L1, mm

12.4 ± 2.3

12.4 ± 2.6

12.8 ± 2.8

.387

L2, mm

16.7 ± 2.2

16.6 ± 2.5

17.0 ± 2.7

.359

L3, mm

9.2 ± 2.2

9.1 ± 2.1

9.0 ± 2.1

.779

L1/PTS, %

59.3 ± 9.2

59.8 ± 8.8

60.4 ± 8.3

.719

L2/PTS, %

79.7 ± 4.6

79.9 ± 4.4

80.2 ± 4.1

.719

L3/PTS, %

44.0 ± 9.6

43.9 ± 9.3

42.9 ± 9.6

.674

L4, mm

14.2 ± 2.4

13.9 ± 2.8

14.1 ± 3.1

.727

  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