Incorrect footwear may be one of a number of factors that lead to injuries that could otherwise be avoided. These include (but are not limited to) localised injuries to the feet, for e.g. foot pressure/blister injuries in addition to injuries further up the chain by indirectly loading these areas. Ensuring your specific foot posture fits your chosen shoe and taking the time to wear these shoes in over gradual increments are two ways risks can be reduced.
As mentioned previously, a running shoe simply is not designed to deal with the sudden movements and change of directions seen in the game of netball. Wearing anything other than a netball shoe on the court could potentially contribute to injury due to lack of stability, grip and overall protection.