u/MyNameIsKali_

Can someone explain like I'm 5 how pec major and lat share some of the same actions?

I don't want to just memorize this stuff, I want to actually understand. It just seems to me like the angle of pull is different. Please help!

Thanks

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u/MyNameIsKali_ — 4 days ago

Clinical relevance of passive and active insufficiency.

There are plenty of resources out there explaining what they are, but I still haven't seen anyone explain why it's important. How does this have clinical significance?

Thanks.

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u/MyNameIsKali_ — 10 days ago

Theoretical situation, probably stupid but I'm curious.

Sorry for the stupid question, I'm not an expert in biomechanics but I am interested in this science. This is completely theoretical and not clinical.

Suppose someone were to have their arm straight forward reaching anteriorly, glenohumeral joint 90 degrees with trunk, as well as the elbow locked into extension. If they protracted their scapula so the humerus moved more anteriorly, what plane would the arm movement be in? Instinctually I would think sagittal but if it's not moving at all in the within the frontal axis, then I thought maybe transverse, but not sure.

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u/MyNameIsKali_ — 13 days ago