Complex sentence: In 1997 he was kicked by a mare in a horse breeding accident, resulting in a fracture that required arthroscopic surgery on his stifle, akin to knee surgery on a human, but recovered and continued to work as the Broncos' mascot for several more years.
Split into simpler sentences: In 1997 he was kicked by a mare in a horse breeding accident, resulting in a fracture that required arthroscopic surgery on his stifle, akin to knee surgery on a human. He recovered and continued to work as the Broncos' mascot for several more years.