Okay, so let's do a cram session for MSK Upper Extremity. As always, I'm going to stick to the need to know stuff.

I'm not going to bother your time with the stuff that I really feel is very low yield and that you don't need to know.

So let's go ahead and get started.

As always, thank you so much for the really nice comments.

You guys are just the nicest people.

So thank you so much.

Let's go ahead and start with the shoulder and I'll work our way down.

So interior glenohumeral dislocation.

So this is your most common type.

Interior dislocation is going to account for around 95%

to 97% of cases of shoulder dislocations.

Now as far as the mechanism of injury it's going to be a

blow to the abducted externally rotated and extended arms. So that's the most common

mechanism of injury. So think like blocking a basketball shot your arms up and out

less commonly is going to be a blow to the posterior humorous or fall on an

outstretched arm can also cause an anterior dislocation but focus on that arm

being abducted a-b-b ab ducked away from the body,

extended and externally rotated and then something hitting the arm in that position.

Non-physical exam, you need to know that you're looking for an ab-ducted,b-ducted, externally rotated arm.

So an anterior dislocation of the shoulder causing the arm to be slightly abducted and

externally rotated.

Diagnosis, you're going to do an x-ray.

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