<prompt> Puppes rule deals with ?Chemical injuriesMultiple impact injuriesSexual assaultPercentage of burns  <response>: Ans. is b i.e., Multiple impact injuries Puppes rule It deals with multiple impact injuries. In multi impact injuries fracture systems form a network, and according to puppes rule the later fractures will not the earlier ones, but will terminate at the earlier ones. Thus it is used to reliably diagnose the sequence of the impact injuries. The rule was developed by Madea and is typically used to diagnose the sequence of shots in bullet injuries. 