An interventional study of Bilateral knee examination with Lachmeter® in Ligament; Laxity, sponsored by Centre Hospitalier Universitaire de Nice. Completed at 1 site in France. Open to female participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-26.
Sponsored by Centre Hospitalier Universitaire de Nice · Not applicable, Interventional, and Prevention
Women's participation in sports at all levels has been increasing in recent decades. Many individual and team sports are at risk of anterior cruciate ligament (ACL) injury. This injury leads to a permanent or long-lasting interruption of sports practice and to significant medical and economic expenses. Women are recognized as being more at risk of anterior cruciate ligament injury with a risk 6 times higher than men. Hyperlaxity is a risk factor for anterior cruciate ligament injury, but the pathophysiological bases are little studied. Hormonal impregnation and certain periods of the menstrual cycle (ovulatory phase) are risk factors for anterior cruciate ligament injury. It therefore seems interesting to investigators to study the influence of hormonal impregnation on ligament laxity. To date no study has investigated such a relationship.
115 studies on the registry are indexed under Joint Instability; 21 are open to participants now.
This study's enrollment of 45 is close to the median of 46 across 58 interventional studies indexed under Joint Instability.
Browse Joint Instability studies →Centre Hospitalier Universitaire de Nice is the lead sponsor of 723 studies on the registry; 176 are open to participants now.
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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:
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Other: Bilateral knee examination with Lachmeter®
Other: Bilateral knee examination with Lachmeter®
Other: Bilateral knee examination with Lachmeter®
Bilateral knee examination with Lachmeter®. Examination repeated 3 times on each knee
anterior tibial translation of the knee
The anterior tibial translation of the knee will be considered as representative of the anterior laxity of the knee of women under hormonal contraception via the Lachman test at 30° measured with a digital arthrometer type Lachmeter® (bilateral examination repeated 3 times on each knee).The degree of laxity will be evaluated thanks to the international classification IKDC: * Grade A 0 to 2 mm = normal * Grade B 3 to 5 mm = almost normal * Grade C 6 to 10 mm = abnormal * Grade D \> 10 mm = severely abnormal
Time frame: Day1 (inclusion visit)
Ran from Jun 2022 to primary completion in Aug 2023, 13 months.
Of 36 non-industry interventional studies with no phase under Joint Instability, half reached primary completion within 15 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 37. This study's 13 months is below that.
Counting every sponsor, half of 41 studies reached it within 15 months; a quarter within 7 and three quarters within 60.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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