Trendelenburg gait (??)

[unsung]

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I have a serious mental block.

I don't understand why injury to the L superior gluteal nerve --> would cause the pelvis to sag on the R (i.e. contralat) side.

So the L superior gluteal nerve innervates the L hip ABductors (gluteus medius, gluteus minimus)... so if we lose L hip abduction, wouldn't the L pelvis tilt down, therefore the R side of the pelvis would tilt up. I.e. the pelvis should sag on the ipsilateral, not contralateral side.

Help? 😕

 

[kstreet]

Keep in mind that the gluteus medius/minimus are the muscles that are keeping the ipsilateral side of the body tense/rigid while you are walking forward. If you lose those muscles, on that ipsilateral side there is nothing holding your body from basically leaning to the other side while you walk forward.

If you step forward with your right leg, the gluteus on the left side tenses up basically supporting your upright position and if you lose those then your body sags to the right.

Just try standing up and talking a step forward and put your hands on your muscles and you'll see what I mean.

 

[Music MD]

easy way to understand it is just stand upright and lift your right leg slightly off the ground. now feel your left gluteus medius.. it's whats keeping you from losing your balance and falling to the right

 

[txhorn]

easy way to understand it is just stand upright and lift your right leg slightly off the ground. now feel your left gluteus medius.. it's whats keeping you from losing your balance and falling to the right

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