Patient selection: anterior cruciate ligament reconstruction
Outcome: allowed to return to running
Criteria that have been reported:
(1) postoperative time in weeks (median 12 weeks)
(2) range of motion (full or > 95% of non-injured knee)
(3) pain (no pain or pain < 2 on a 10 cm VAS)
(4) limb symmetry indices > 70% (hamstring, quadriceps)
(5) hop test limb symmetry index > 70%
Additional factors affecting the decision:
(1) freedom from symptoms
(2) absence of new knee injuries
(3) single leg squat or step-up movement to detect knee valgus
