![]() ![]() The three muscles above are all working together to perform this motion. ![]() Then rotate your toes inward to internally rotate your femur. Turn the toes of your left foot slightly away from your body and lift the leg slightly out to the side into abduction. Keep your weight shifted into your right foot so that the muscles you’re palpating don’t work to stabilize the left hip. So to feel these muscles in their most contracted position place the fingers of your left hand on your left hip just below your ASIS and place your thumb just lateral to the PSIS. Think of it as a synergist of hip flexion and abduction: it assists in those actions but isn’t primary.īecause of it’s deep location, it’s difficult to palpate this muscle in action. It’s a hip stabilizer and is best at performing hip internal rotation, and also at decelerating hip adduction (basically, fighting against the adduction of the pectineus and other anterior adductors). The actions of glute minimus are closely aligned with the TFL and glute medius being situated beneath or inferior to them. It has two sections with separate insertion points: one that attaches to the anterior portion of the ilium and one that attaches more laterally. Glute minimus is deep, but also fans out from the greater trochanter to the iliac crest like glute medius. Women with wide-set hips tend to have short TFL’s. The TFL performs hip abduction, but also flexes and internally rotates the hip. This bugger of a muscle is hard to connect with since it is also responsible for a few contradictory motions. When the TFL is short and tight, it may contribute to excessive tibial external rotation and/or anterior pelvic tilt. Oftentimes when people have problems with the IT Band the problem is really with TFL, or even the glutes which also invest into the ITB. TFL is indeed a muscle, but it invests into the IT Band from the ASIS instead of into another bone. Tensor Fascia Latae (TFL)ĭon’t let the word “fascia” fool you here. ![]() Your thumb should feel the posterior fibers of glute medius contract more strongly. Then, rotate your femur laterally by pointing the toes away from your body and slightly extending the leg behind you. You will feel the muscle under your four fingers contract slightly more. Now, rotate your femur medially by pointing your toes inward. Lift your right leg straight out to the side with your toes pointed straight ahead. Test its function by placing the thumb of your right hand just lateral to the PSIS and the four fingers just below the ridge of your ilium on your lateral hip. Learn more about glute medius in its dedicated blog. But it doesn’t end there! The anterior fibers help internally rotate and flex the femur, while the posterior fibers extend and externally rotate the femur. This conundrum of a muscle does it all: Abduction–and 60% of all hip abduction at that–accomplished mainly by the middle fibers of this three-sectioned muscle. It attaches to the greater trochanter and fans out into insertion points along the iliac crest. Glute medius is located on the lateral pelvis, between the anterior superior iliac spine (ASIS) and the posterior superior iliac spine (PSIS). Add hip flexion to the mix (which makes an appearance here) and now you’ve really got a lot to sort out! Hip Internal Rotation and Abduction Muscles en:Anatomography Gluteus medius I decided to lump these two actions together since there is so much overlap between them. ![]() You may have already studied up on hip adduction and flexion, but rotation and abduction are other matters. Those pesky ball-and-socket joints going every which way can really confuse matters of movement, can’t they? The hip, like the shoulder, can move in all planes of motion powered by any number of the 17 muscles that are responsible for its joint actions (21 if you break up the three major glutes into their eight sections!). ![]()
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