Originally Posted by
goswannies
Then yes ... and no.
A partial tear - especially one that heals, yes.
A full tear (often supraspinatus) or involving multiple tendons of the RC, not likely. This is because the RC is responsible for rotating the arm as well as contributing to elevation of the arm beyond 30!degrees. The deltoid is a significant elevator of the arm, however, the RC also contributes and it also helps to stabilise the proximal pull of the humeral head on the glenoid when the deltoid contracts. With a heavily or fully compromised RC, you will lose power and range. This is potentially ok was we get older and don’t always need to perform a lot of overhead activity (& can get away with deltoid muscle compensation) but not great for younger people or elite athletes. That’s a very simplistic description, but it’s mostly just to illustrate that a torn RC can have significant consequences.
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