A fantastic article related to Infraspinatus Syndrome (IS) resulted from injury to the suprascapular nerve.
This is typically important for volleyball players. Here is part of the abstract:
Objective: Infraspinatus syndrome (IS) results from injury to the suprascapular nerve. For reasons that are poorly understood, volleyball players are at greater risk of developing IS than are athletes who compete in other overhead sports. Differences between the shoulder kinematics of volleyball-related overhead skills and those skills demanded by other overhead sports might explain the pronounced prevalence of IS among volleyball athletes.
The conclusion is very interesting. Medical staff members need to design testing procedures that directly relate to this issue. Those athletes that have shoulder instability issues need to be found early so that injury prevention programs can be created to minimize risk.