Complex sentence: In order to diagnose a SNAC wrist you need a PA view X-ray and a lateral view X-ray, as well as in SLAC as in SNAC the lateral view X-ray is performed to see if there is a DISI.
Split into simpler sentences: In order to diagnose a SNAC wrist you need a PA view X-ray and a lateral view X-ray. As in SLAC, the lateral view X-ray is performed to see if there is a DISI.