Pitching Mechanics Analysis
The video clip below is of the pitching mechanics of Jonathan
Broxton. In this case, he is throwing a 96 MPH fastball.
The thing to notice in this video clip is his
Inverted W or
Inverted V and how it creates a timing problem which
increases the load on both his elbow and his shoulder.
You can see in Frame 67 that Jonathan Broxton picks up
his elbows after breaking his hands and swinging his Pitching
Arm Side (PAS) forearm back toward Second Base. You can also see
that Jonathan Broxton's PAS forearm is horizontal in Frame 72,
which is the moment that his Glove Side foot plants and his
shoulders start to rotate.
This will increase the distance over which, and the
force with which, Jonathan Broxton's PAS forearm will externally
rotate. This in turn will significantly increase the load on
Jonathan Broxton's PAS elbow and PAS shoulder.
However, it's hard to say exactly when this problem
will manifest itself since, like Billy Wagner, Joel Zumaya,
Aaron Heilman, and Jensen Lewis, Jonathan Broxton is a reliever
and pitches fewer innings during the year. As a result, he may
be able to survive this timing problem longer than would a
starting pitcher. However, regardless of when his problems with
his pitching mechanics start to crop up, Jonathan Broxton is at
an elevated risk of experiencing elbow and shoulder problems.