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Table 3 Patient objective outcome and muscle strength

From: Suture tape reinforcement of hamstring tendon graft reduces postoperative knee laxity after primary ACL reconstruction

  HT + ST n = 20 HT control n = 20 p-value QT + ST n = 20 QT control n = 20 p-value
ROMa
 Loss of extension
  Preop 0 0 n.s. 0 0 n.s.
  6w 6 (30) 4 (20) n.s. 4 (20) 2 (10) n.s.
  6 m 0 0 n.s. 0 0 n.s.
 Loss of flexion
  Preop 0 0 n.s. 0 0 n.s.
  6w 11 (55) 4 (20) 0.029 10 (50) 4 (20) 0.046
  6 m 1 (5) 2 (10) n.s. 1 (5) 1 (5) n.s.
 Hydropsb
  Preop 0 0 n.s. 0 0 n.s.
  6w 12 (60) 9 (45) n.s. 12 (60) 8 (40) n.s.
  6 m 2 (10) 1 (5) n.s. 1 (5) 1 (5) n.s.
 Clinical laxityc at 6 m
  Lachman 4 (20) 3 (15) n.s. 3 (15) 3 (15) n.s.
  Pivot Shift 0 0 n.s. 0 0 n.s.
 Biodex 6 m LSI ≥ 90%d
  Quadriceps strength 5 (28) 5 (25) n.s. 1 (8) 1 (5) n.s.
  Hamstring strength 4 (22) 6 (30) n.s. 10 (77) 12 (60) n.s.
  1. Values are displayed as number and (%) percentage
  2. HT Hamstring tendon, ST Suture tape, QT Quadriceps tendon
  3. aROM at 6 weeks and 6 months is compared to pre-op values in the operated knee
  4. bHydrops according to IKDC
  5. cAssesses stability of knee at rest result range from 0 (normal stability) to 1 (increased instability)
  6. d The limb symmetry indexes (LSIs) of the peak quadriceps and hamstring torque were calculated as [involved limb/uninvolved limb × 100] for each test. The achievement of a symmetrical isokinetic muscle strength was defined as performing at least 90% of the contralateral leg (LSI ≥ 90%)