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Table 1 Navigation data of each clinical grade

From: Comparison between clinical grading and navigation data of knee laxity in ACL-deficient knees

 

Clinical grade

 

Grade 1+

Grade 2+

Grade 3+

Lachman test

   

Displacement (mm)

10.0

13.2 ± 3.1c

14.5 ± 3.3b

Anterior drawer test

   

Displacement (mm)

6.8 ± 1.4

7.4 ± 1.8c

9.1 ± 2.3a, b

Pivot shift test

   

   Before reduction

   

Displacement (mm)

3.9 ± 1.8c

4.8 ± 2.1c

6.0 ± 3.2a, b

Rotation (deg)

21.5 ± 7.8

21.8 ± 7.1

21.1 ± 7.1

   After reduction

   

Displacement (mm)

3.4 ± 1.6

3.1 ± 1.5

3.6 ± 1.9

Rotation (deg)

25.6 ± 7.2

26.3 ± 5.7

25.5 ± 6.8

  1. Data expressed as mean ± SD.
  2. a P < .05 compared to grade 1+.
  3. b P < .05 compared to grade 2+.
  4. c P < .05 compared to grade 3+.