Cohort study and preventive approach for knee osteoarthrits and anterior cruciate ligament injury

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Iwaki Health Promotion Project revealed that the risk factors for knee osteoarthritis were aging, female, obesity, and metabolic syndrome. Furthermore, the presence of knee pain causes locomotive syndrome. Serum hyaluronan is a biomarker for knee osteoarthritis, and its elevation predicted progression of knee osteoarthritis. Also, effect of exercise therapy for knee osteoarthritis was less in those with higher serum hyaluronan.Valgus alignment was risk for ACL injury. In pubertal, valgus alignment of females is larger than males, and its angle become progressed with aging. On the contrary, preventive training approach for trunk stability (10 minutes training, 4 times a week) was effective. At landing, trunk bending angle increased, valgus moment decreased and trunk lateral instability decreased. Trunk stabilizing training for pubertal age has potential to prevent ACL injury.