I don’t quite understand how the horizontal flexion/extension is different from horizontal abduction/adduction... the arms are doing the same movement?
Imagine you begin by pointing your right arm out in front of you. Let's say that is your starting position. Move your right arm, using the shoulder joint, parallel to the ground towards your left arm. That is horizontal flexion (the joint angle is decreasing). Go back to the starting position. Move your right arm, from the shoulder joint, parallel to the ground but this time to the right, so you are pointing directly out to the side. That is horizontal abduction (you are moving away from the midline of the body). Now continue from that position (your arm pointing out to the right). Move your arm, from the shoudler, in the same direction you just moved, until you are pointing a little bit backwards behind you (you probably wont be able to go very far). This is horizontal extension. Finally, to move your arm from pointing directly out to the right, to pointing directly in front of you (i.e. the first position) is horizontal adduction. (You have moved back towards the midline of the body.) Hope that's clear enough - it's hard without diagrams!
Great video, thanks for sharing! I've just embarked on a PT course (starting with levels 2, 3 and then going to continue up to 4), and this was really useful, I was finding it a bit hard to get my head around everything by purely just reading text.
@@miketylersport hey there , thank you and it went well , hope to find another video to be able to identify the places to be able to pinpoint the skeleton joint body muscle movement when palpating
