Complex sentence: She earned a medical waiver to compete in the 2009-10 Skeleton World Cup season following surgery in the wake of an April 2009 snowmobile accident where Uhelander shattered her kneecap, and broke it again in August 2009 (having a total of four surgeries).
Split into simpler sentences: She earned a medical waiver to compete in the 2009-10 Skeleton World Cup season, following surgery in the wake of an April 2009 snowmobile accident where Uhelander shattered her kneecap. She then broke it again in August 2009 (having a total of four surgeries).