Hormonal factors.
D016118:Anterior Cruciate Ligament / Q000473:pathology / Q000503:physiopathology; D000070598:Anterior Cruciate Ligament Injuries; D000886:Anthropometry; D001265:Athletic Injuries / Q000453:epidemiology / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D001696:Biomechanical Phenomena; D045166:Estradiol Congeners / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D045167:Progesterone Congeners / Q000378:metabolism*; D012307:Risk Factors; D012737:Sex Factors; D013314:Stress, Mechanical; D045165:Testosterone Congeners / Q000378:metabolism*; D014481:United States / Q000453:epidemiology; D016474:Weight-Bearing
D045166:Estradiol Congeners; D045167:Progesterone Congeners; D045165:Testosterone Congeners