Originally Posted by mxmx
Thank you for a very intensive and valuable post. It makes sense, especially the shoulder part and not dropping the left arm too quick. On the legs part, I may have trouble physically with my bad knee....any tips on protecting my legs better? With the use of my legs and stomach muscles, i have learnt to protect my back. But now it seems, i did not protect my legs enough.
The pronation pic you posted, is quite valuable for someone I am trying to teach how to serve. I would expect however, a more stretched out wrist? Am i wrong? Or is it possibly different how woman do it these days?
The pronation pic is of a twist serve, so there is slightly less ulnar deviation at the wrist than a first serve.
Still, check out this video from Jim McLennan:
Racquet Angle on Serve http://www.youtube.com/watch?v=1t6bLABbebc
I was surprised at how few pics I could find of male players taken from directly in front or behind at ball impact to show the angles at their wrist and elbow.
But here are two I found:
You say you have a "bad knee". Is there osteoarthritis or some type of tendon/ligament problem? If not, you may find you can have stronger legs - to help protect the knee joint - from doing squats and deadlifts, even if the weight lifted is quite modest.