Evaluation of Anterior Tibial Translation of the Knee in Healthy Women, at Two Times of the Menstrual Cycle, on Hormonal Contraceptives or Not (FLEX)

Inclusion Criteria: * Woman between 18 and 40 years old * No history of surgery of the 2 lower limbs * No change in contraceptive method in the last 6 months * Signature of the informed consent * Affiliation to the social security system * To be at Day 14 of her menstrual cycle (+/-1 day) (the first day of the cycle (Day1) being considered as the first day of the menstrual period), except for those on micro-progestative contraception not regulated By inclusion group: \- For women without hormonal contraception: No method of contraception Or a copper intrauterine device Regular cycles of 26 to 33 days \- For women on estrogen-progestin contraception: Correct use of the estrogen-progestin pill according to the MA Or wearing a vaginal ring according to the MA protocol Or wearing a contraceptive skin patch according to the MA protocol Regular cycles of 26 to 33 days \- For women on micro-progestin contraception : Continuous use of the micro-progestogen pill Or wearing a subcutaneous hormonal implant, Exception: women on micro-progestin contraception who are not regulated: * They may have an irregular cycle or no cycle to be included * They can be included on any day if they have no cycle Exclusion Criteria: * Pregnancy or breastfeeding in progress * Hormonal intrauterine device or injectable contraception * Menopause (defined as no menstruation for one year) * Surgery: tubal ligation, oophorectomy, adnexectomy, hysterectomy * History of microcrystalline or infectious pat…