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Table 4 ACL-RSI < 40 versus > 65 after ACL reconstruction

From: Subjective knee apprehension is not associated to physical parameters 6–12 months after anterior cruciate ligament reconstruction

 

Patients n = 170 *

P values

 

ACL-RSI < 40

ACL-RSI > 65

 

Patients

n = 54

n = 116

 

Age

31 (± 10) years old

27 (± 8) years old

p = 0.002

Sex

37 (69%) men, 17 (31%) women

82 (71%) men, 34 (29%) women

p = 0.76

BMI

25.3 (± 4.4)

24.1 (± 4.0)

p = 0.05

Pivot-sport activities

95 (± 31)%

86 (± 37)%

p = 0.1

Muscle strength

- Concentric quadriceps strength at 60°/s

- Concentric hamstring strength at 60°/s

- Eccentric hamstring strength at 90°/s

125 (± 46) Nm/kg (LSI 74%)

88 (± 29) Nm/kg (LSI 88%)

110 (± 35) Nm/kg (LSI 85%)

132 (± 41) Nm/kg (LSI 76%)

92 (± 34) Nm/kg (LSI 94%)

112 (± 41) Nm/kg (LSI 88%)

p = 0.22

p = 0.49

p = 0.79

Coordination

- Triple hop test (meters)

- Side hop test (jumps)

3.8 (± 1.1) (89% of contralateral)

32.8 (± 17.2) (98% of contralateral)

3.9 (± 1.1) (87% of contralateral)

40.2 (± 18.8) (88% of contralateral)

p = 0.37

p = 0.02

Anterior tibal laxity

- GNRB absolute laximetry (operative side)

- GNRB differential laximetry to opposite side

6.1 (± 2.1) mm

0.5 (± 1.2) mm

5.4 (± 3.4) mm

0.4 (± 1.0) mm

p = 0.2

p = 0.31

  1. *Exclusion of 133 patients who had intermediate ACL-RSI score between 40 and 65
  2. BMI Body mass index, ACL-RSI Anterior cruciate ligament return to sport after injury, LSI Limb symmetry index