Rider Anatomy Series – The Glute Medius

Rider Anatomy Series – The important Glute Medius
The gluteus medius lies on the outer surface of the pelvis, between the top of the hip bone and the top of the femur or thigh bone. When we give a leg aid the Glute Medius on that side is needed to help give the aid and the glute medius on the other side is used to stabilise the pelvis and help keep your seat level. So if one or both are weak it will cause a problem both with giving a leg aid and staying straight in the saddle. It also lifts the leg sideways away from the horse and assists in rotating the thigh inward. Did you know that the TFL (which we talked about in an earlier Rider Anatomy Series post) can be synergistically dominant and take over from the glute medius preventing it from doing it’s job.
When riding, subtle shifts in weight require the Glute Medius to adjust constantly to help to keep the pelvis level. This stabilization ensures effective communication with the horse and allows the rider to maintain an aligned posture. The Glute Medius works with the core muscles and other glute muscles (gluteus maximus and minimus) to provide overall stability. This helps to stop the rider collapsing to one side. Weakness or dysfunction in the gluteus medius can lead to instability and hip or knee pain too.