Table 2 Younger and older patients after ACL reconstruction
Patients n = 303 | P values | ||
|---|---|---|---|
Age < 20 years old | Age > 20 years old | ||
Patients | n = 81 | n = 222 | |
Sex | 54 (67%) men, 27 (33%) women | 158 (71%) men, 64 (29%) women | p = 0.54 |
BMI (kg/m2) | 23.4 (± 4.6) | 24.7 (± 3.9) | p = 0.02 |
Pivot-sport activities | 88 (± 35) % | 88 (± 36) % | p = 0.96 |
Knee apprehension | |||
- ACL-RSI | 62 (± 29) | 56 (± 29) | p = 0.09 |
Muscle strength | |||
- Concentric quadriceps strength at 60°/s (Nm/kg) | 132 (± 44) (LSI 80%) | 128 (± 46) Nm/kg (LSI 73%) | p = 0.42 |
- Concentric hamstring strength at 60°/s (Nm/kg) | 90 (± 27) Nm/kg (LSI 97%) | 92 (± 33) Nm/kg (LSI 91%) | p = 0.67 |
- Eccentric hamstring strength at 90°/s (Nm/kg) | 108 (± 35) Nm/kg (LSI 91%) | 114 (± 39) Nm/kg (LSI 87%) | p = 0.25 |
Coordination | |||
- Triple hop test (meters) - Side hop test (jumps) | 3.9 (± 1.1) (90% of contralateral) 39.2 (± 17.5) (91% of contralateral) | 3.9 (± 1.2) (87% of contralateral) 38.6 (± 18.6) (89% of contralateral) | p = 0.57 p = 0.80 |
Anterior tibal laxity | |||
- GNRB absolute laximetry (operative side) - GNRB differential laximetry to opposite side | 5.8 (± 2.6) mm 0.8 (± 1.4) mm | 5.5 (± 2.6) mm 0.3 (± 0.9) mm | p = 0.42 p = 0.0002 |