I would like to see these notes in that it is almost impossible to prove Kinesiological theory and it’s pathologies. Voluntary supination has been theorized to effect the back of the elbow for a long time now, agreed.
"Forced supination is a well noted problem”
I would not emphasis this in that adults also suffer from this debilitating action.
“especially in youth pitchers”
Did you understand this mechanical mechanism I eluded to that supinated and pronated pitches rely on the attachments that emanate from the medial epicondyle growth plate of the flexor group? The main pronator muscle (pronator terres) attaches there along with 4 others.
“I have not seen anything on medial elbow problems with pronated pitches”
Not so, what you are witnessing is end of range of motion voluntary supination where the forearm has no where else to go but back the other way with involuntary pronation after release. Everybody makes this error in mechanical diagnosis,
“Most pitches end up in pronation except for the slider and for the slurve”
This is not my theory it is Dr.Marshalls and it makes perfect anatomical sense.
“It sounds that your theory about pronated injuries to the medial epicondyle has not yet been substantiated.”
Like I said who can prove any of this without electroencephalograms and even they make mistakes called artifacts. I’ll go with his theories knowing what I know about him and his education and intellect, nobody else comes close.
Now you have something new to mull over “ballistic hyper extension” that supination causes and the reason to not produce it.
“ I have been involved with youth baseball for almost 60 years and have not seen it or have attributed it to supination when I didn't know”
First explain to me how this is done anywhere with any kinesiological case?
“Let me know when you find a verifiable case and we will mull it over together”
When someone invents the high speed motion x-ray or MRI it might happen until then all is theory.
“the first left turn circuit”