Sounds like a good subject to do research on. In patients with femur/tibia/humerus fractures, measuring soft tissue coverage. Though there would be a problem with immediate post-injury swelling. I'll work on that one.
Anyway, you are right about one thing Rugb,
"Regular participation in a multifaceted resistance training programme
that begins during the preseason and includes instruction on movement
biomechanics may reduce the risk of sports-related injuries in young
athletes."
<a title="British journal of sports medicine.">Br J Sports Med.</a> 2010 Jan;44(1):56-63. Epub 2009 Nov 27.
When I think sports-related injuries, though, I think ligamentous-type things. But stress fractures in foot bones are somewhat sports-related.