Matsumoto 2006

Methods	Treatment allocation by birth date Non blinded assessment Mean follow‐up by group: PT 87 months (+/‐ 12.2 months), HT 80.7 months (+/‐ 13.2 months) Loss to follow‐up: 3 PT and 5 HT (excluded from analysis) Graft re‐ruptures: none reported
Participants	Japan 80 participants with chronic ( > 60 months), isolated unilateral ACL tears PT: n = 40, mean 23.7 years (+/‐ 7.7 years), 21 males / 16 females HT: n = 40, mean 24.4 years (+/‐9.7 years), 15 males / 20 females
Interventions	Arthroscopically‐assisted ACL reconstruction with: 1. Patellar tendon (single incision, proximal fixation ‐ interference screws (7 x 20 mm); tibial fixation ‐ interference screws (9 x 20 mm)) 2. Hamstring tendon: semitendinosus/gracilis tendons (5 strands; single incision, technique used bone graft; proximal fixation ‐ interference screws (7 x 20 mm); tibial fixation ‐ interference screws (9 x 20 mm))
Outcomes	Mean 80 months follow‐up for: KT‐1000 (Manual Maximum), range of motion, heel height difference, kneeling, anterior knee pain, IKDC; return to activity; Cybex II (60, 180 degrees/second)
Notes	No additional methodological information or individual patient data were received from the authors.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	Treatment allocation by birth date
Allocation concealment (selection bias)	High risk
Blinding (performance bias and detection bias) All outcomes	High risk
Incomplete outcome data (attrition bias) All outcomes	High risk	Patients lost to follow‐up were excluded.
Selective reporting (reporting bias)	High risk	Did not report graft re‐ruptures.
Other bias	High risk	There was an imbalance in the gender distribution with more males in the PT group and more females in the HT group.