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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 1 Summary of the 2D and 3D measurements in mm for the two observers at Time 0 and Time 1 (30 days after Time 0)

From: Transepicondylar distance measured on MRI can predict the length of the graft required for different anterior cruciate ligament reconstruction (ACLR) techniques useful for revision surgery

Parameter measured (mm)

Observer 1

Observer 2

Observer 1 (T0 + T1) + Observer 2 (T0 + T1)

Time 0

Time 1

Time 0

Time 1

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Range

2D measurements

 Transepicondylar distance (TD)

82.6

6.5

82.5

6.3

82.9

6.1

83.2

6.4

82.8

6.3

71.9–94-9

 Medial Femoral condyle AP dimension

60.8

3.7

60.1

3.7

61.0

4.0

61.1

6.0

60.8

3.7

54.4–71.1

 Lateral Femoral condyle AP dimension

61.7

4.2

61.6

4.2

62.0

4.2

62.1

4.6

61.9

4.2

54.5–70.4

 Proximal tibia ML dimension

74.4

5.8

75.2

5.7

74.9

5.9

75.6

5.6

75.0

5.6

65.3–85.4

 Medial tibial plateau AP dimension

47.0

3.7

46.4

3.8

52.5

4.2

48.5

4.6

48.6

3.8

42.3–58.7

 Lateral tibial plateau AP dimension

45.1

3.8

45.3

3.9

45.9

4.0

44.8

3.8

45.3

3.7

39.6–52.2

 Tibial PCL insertion-trochlearcartilage distance

81.5

5.8

81.4

6.0

80.3

5.4

82.5

6.0

81.4

5.7

71–97.7

 Patellar tendon length

47.8

6.3

46.5

5.8

45.2

3.9

46.1

4.5

46.4

4.6

37.7–58.4

3D measurements

 Intrarticular length of ACL graft

37.5

4.2

37.5

3.8

39.9

3.5

38.6

4.2

38.3

3.5

31.6–45.4

 Outside-in femoral tunnel length

34.1

3.5

33.2

3.0

34.8

3.0

35.1

3.0

34.3

2.9

29.2–40.2

 Outside-in anatomic ACL reconstruction

69.4

5.9

70.9

5.7

74.1

5.9

73.7

6.6

72.0

5.7

61–81.6

 Saragaglia/Yamaguchi techniques

125.6

11.2

123.5

9.4

120.6

8.1

121.9

9.6

122.9

9.0

107.1–142.2

 Anatomic Anterolateral ligament reconstruction

52.6

5.3

51.3

4.3

45.6

3.3

48.2

4.6

49.4

3.5

42.9–58.4

 Lateral extrarticular tenodesis (anatomical femur)

54

5.3

52.6

4.4

46.5

3.5

48.2

4.6

50.3

3.6

43.6–59.1

 Lateral extrarticular tenodesis (non-anatomical femur)

69.9

6.9

73.4

5.8

65.5

5.3

70.4

4

69.8

4.6

61.7–78

 Over the top femoral position ACL reconstruction

74.0

6.6

76.9

6.0

85.1

6.7

76.8

6.5

78.2

5.9

67.3–89

 Marcacci technique

139.5

28.6

150.3

10.7

150.5

10.8

147.2

9.8

146.9

13.2

129.7–166.4

  1. The last column includes the mean and SD obtained from the sum of Observer 1 (Time0) + Observer 1 (Time 1) + Observer 2 (Time0) + Observer 2 (Time 1)
  2. SD Standard deviation, AP anteroposterior, ML mediolateral, PCL posterior cruciate ligament, ACL anterior cruciate ligament