Yeah I have always been amazed at the complexity of the shoulder joint. You basically have two concentric sets of muscles that do the same thing, but one is for power (the deltoid) and one is for precision (the rotator cuff). I’m oversimplifying but it is pretty unique and it’s why humans are so insanely good with their arms/hands. Looking at other apes trying to hammer a nail for instance, there’s no comparison.
Yeah I have always been amazed at the complexity of the shoulder joint. You basically have two concentric sets of muscles that do the same thing, but one is for power (the deltoid) and one is for precision (the rotator cuff). I’m oversimplifying but it is pretty unique and it’s why humans are so insanely good with their arms/hands. Looking at other apes trying to hammer a nail for instance, there’s no comparison.