ACL Injury and Laxity During Menstrual Cycle

What’s This Research About?

They wanted to find some possible reasons why women have more ACL injuries.
In this study, they were looking at the effects of estradiol and temperature, of which
both have been known to affect connective tissue. They were the first investigators
to measure and control for temperature in an ACL study. The purpose of the study
was to investigate how estradiol levels, and tissue temperature related to ACL
elasticity, and knee flexibility.

TITLE: Anterior cruciate ligament elasticity and force for flexion during the menstrual cycle


PUBLICATION: Medical Science Monitor

DATE: November 2013

AUTHORS : Haneul Lee, Jerrold S. Petrofsky, Noah Daher, Lee Berk, Michale Laymon, Iman Akers Khowailed

Much of the data compiled in the last couple of decades has shown that ACL tears occur in women at 2 to 8 times as many than in men. Many theories ranging from anatomy, motor patterning, strength, and hormonal effects are attributed to the higher incidence of ACL injuries.

ACL– Anterior cruciate ligament is in the knee and is one of the tissues connecting the femur to the tibia. It keeps the tibia from moving excessively anteriorly as well as rotating medially.

Estradiol– Estradiol is a steroid and the primary female sex hormone. ACL has a receptor for this so the estradiol has been found to affect the integrity of the ligament. A significant reduction of fibroblast proliferation was observed with increasing estradiol concentrations.(1)

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By |2017-06-07T19:34:32-04:00May 22nd, 2017|Musculoskeletal|0 Comments

About the Author:

Catherine brings to her role as a personal trainer a wealth of education and years of athletic experience with training in track and cross country running, gymnastics and rowing, boxing and yoga. She received a B.A. in Sports Medicine and Exercise Physiology from the University of San Francisco and an M.A. in Kinesiology at San Francisco State University. She also holds certifications in ACE, FMS I and II, PRI (Myokinematics, Respiration), Neuromuscular therapy, FRCms, and FR. As an athlete she sustained several injuries, which led her on the path to study and understand the body and the mechanisms of healing. "I was fascinated with everything I learned. Throughout college, I worked with USF athletes as an athletic trainer in the prevention and rehabilitation of injuries. Soon I was able to transfer all of this knowledge into helping everyday people with their aches and pains." Her thirst for knowledge is never quenched and she continues to evolve her practice to stay up to date on the latest research and methods to help her clients with present injuries, pain, and best ways to acquire strength to maintain a healthy body. "I believe assessment is still key in starting with clients but stability, global strength and everyday movement are key to people's longevity, and quality of life. If people can slowly and systematically expose their bodies to different loads to gain strength and mobility they will better succeed to get the most out of their bodies." Learn more about Catherine Cowey.