Originally Posted by taras0000

Get some Xrays of your Acromio-Clavicular joint before you start. There are three basic Acromion morphologies, one of them being hooked. This can make it difficult to do certain overhead lifts like the snatch and over heard squat. I have a Type III acromion, so I cut those two exercises out of my programs when I found that out. You can still overhead press, and do similar movements. It's the rearward bias that bent-over overhead exercises (deep overhead squat, the catch in a clean) impose that can end up irritating the rotator cuff muscles if you have a Type III or even Type II AC joint.