[sumo] Spondylolysis (back stress fracture)

[Scott Kahn]

I have done a fleetingly quich investigation of back stress fracture, 
known as spondylolysis.  One article that I read examined the angle of 
stress fracture, and implied that sports that twist the upper torso, 
including softball, tennis, volleyball, baseball, judo and shot-put, and 
I would include sumo, can be different from the angle in non twisting 
sports, such as soccer and running.  Would this lead to the conclusion 
that a stress fracture resulting from a twisting sport might not be 
exacerbated by activity in a nontwisting sport?   Hmm.