The CHIP SHOT can be assessed for anatomical positions too
Ever since someone said 'the dog must wag the tail, not the tail the dog' people have used a lot of body motion for that very basic shot - the chip shot.
Sure, the dog must wag the tail, but does the entire dog need to move for the mere purpose of say flicking a tiny fly off the end of its tail?
The more movement that is made for any shot (especially dog-like movement, that is, whole-body movement), from putt to full-swing, the less likely the golfer will be to deliver the club back to the exact same spot, time after time. Even the pros. They might time it better, but under pressure, timing flies out the window.
Also, any awkwardly positioned joints (ie joints which are unable to straighten out in the plane - direction - of their design), will add to the inconsistency. And the trail elbow is practically the 'final frontier'. If it is forced to straighten out at an awkward angle, it cannot do so correctly all the time.
[embed]http://youtu.be/IDMF05vXcCA[/embed]