Hip abduction strength after ACL (hall MP et al, 2015, Khayambashi 2016)

Patients with poor performance on Single leg LST of the operative
leg had significantly lower hip abduction strength in the
surgical leg (17.6 kg) compared with the nonoperative leg
(20.5 kg) (P ¼ .024). Those with good performance had
similar hip abduction strength in both legs, with a mean
of 20.5 kg in the surgical leg versus a mean of 20.1 kg in the
nonoperative leg (P ¼ .50). Reference

See here how to measure hip strength with Kristian Thorborg. Link

Hip Muscle Strength Predicts Noncontact Anterior Cruciate Ligament Injury in Male and Female Athletes A Prospective Study

Clinical cutoffs were established to identify athletes at high injury risk: hip abduction strength 35.4% BW. According to these strength cutoffs, athletes classified as low risk have an injury risk that decreases from 3% to less than 1%, while athletes classified as high risk have an injury risk that increases from 3% to 7%.

For the isometric hip
abduction assessment, athletes were side-lying on a treatment table, and a strap (positioned proximal to the iliac crest and secured around the table) was used to stabilize the pelvis. The hip was abducted 30, and the dynamometer pad was placed 10 cm proximal to the lateral femoral epicondyle. Subjects then abducted their hip with maximum effort into the dynamometer pad for 5 seconds against manual resistance. Three repetitions were performed, and the average value was used for analysis

All strength measures were recorded in kilograms and expressed as a percentage of body weight (% BW).

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