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Distraction of the knee with a low PCL elevation angle ( i . e . a flat PCL ) resulted in greater increase in gap height than distraction of a knee with a steep PCL .
 Anatomy: knee; Anatomy: PCL; Anatomy: PCL; Anatomy: knee; Anatomy: PCL
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: knee; Anatomy: PCL; Anatomy: PCL; Anatomy: knee; Anatomy: PCL