But congenital bone defect isn't the reason he's suffering tendinitis. It's the immense pressure/pounding he exerted on his knees.
Using Haas isn't helping your argument. Consider Haas has smooth natural motion on his shot, yet, he gets shoulder injury. Nadal games is way more taxing than Haas, not just the movement on court but his mechanics.
I'm very surprise that Nadal continue to play physical game today when few years back many people thought that his career is going to be short.
I read an article before that explained medically how the bone affects his knees by putting more pressure on his tendons.
So now, they both have to have the same injuries? The issue concerned players getting injured. I don't expect their injuries to mirror each other. Haas has had more than shoulder injury.
Tommy Haas (GER)
All Injuries
Shoulder 32/2013 33/2013
Illness 21/2013 25/2013
Illness 8/2013 9/2013
Right knee 15/2012 18/2012
Thoracic pain 11/2012 12/2012
Calf 1/2012 3/2012
Hip 32/2011 35/2011
Back 27/2011 31/2011
Hip surgery 9/2010 27/2011
Flu 42/2009 3/2010
Shoulder 41/2009 42/2009
Blister 32/2009 35/2009
Shoulder 17/2008 24/2008
Sinus Infection 11/2008 24/2008
Right shoulder 3/2008 8/2008
Abdominal 26/2007 31/2007
Right shoulder 19/2007 26/2007
Wrist 15/2006 21/2006
Shoulder 9/2006 9/2006
Right Thigh 24/2005 29/2005
Hip 29/2004 30/2004
Unknown 1/2003 9/2004
Real injuries have nothing to do with technique.
Jo-Wilfried Tsonga (FRA)
All Injuries
Left Knee 26/2013 open
Viral infection 24/2013 26/2013
Groin 1/2013 3/2013
Back 43/2012 44/2012
Right arm (doubles) 33/2011 35/2011
Right arm 32/2011 33/2011
Fatigue (doubles) 24/2011 25/2011
Knee 44/2010 1/2011
Right leg 21/2010 25/2010
Back 19/2010 20/2010
Right groin (doubles) 15/2010 16/2010
Sprained ankle 9/2010 10/2010
Wrist 44/2009 45/2009
Back 2/2009 3/2009
Unknown 40/2008 42/2008
Knee 21/2008 35/2008
Ankle Sprain 7/2006 7/2006
Right Arm 26/2005 5/2006
Back Strain 14/2005 18/2005
Again, all parts of the body are affected when you're a professional tennis player. That's for anyone.