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Table 4 Quadriceps and hamstring muscle strength comparison between SB ACL and DB ACL group

From: Effect of haemarthrosis on the rehabilitation of anterior cruciate ligament reconstruction- single bundle versus double bundle

Muscle testing Normal knee Operated knee Deficit (%)
3 months 6 months 3 months 6 months 3 months 6 months
Quadriceps (Concentric) SB 38.26 40.36 29.73 35.24 22.32 12.7
DB 39.32 42.34 25.91 32.66 34.12 16.8
Quadriceps (Eccentric) SB 34.21 39.45 24.54 34.29 28.27 13.09
DB 36.27 40.10 22.01 32.66 39.34 18.56
Hamstrings (Concentric) SB 18.98 23.05 15.70 21.16 17.33 8.23
DB 21.23 25.42 17.07 22.55 19.64 11.32
Hamstrings (Eccentric) SB 15.1 19.63 13.08 18.35 13.4 6.56
DB 18.46 22.31 15.72 20.31 14.88 9.80
  1. *HUMAC/NORM Isokinetic muscle testing (torque = N/m2) at 60/60 deg/sec 3 Reps.
  2. *In normal subjects, imbalances of 10% or less can be considered normal while differences of 10% to 20% possibly abnormal and those above 20% probably abnormal.