4165
Comparison between pretreatment and 6 - week values were as follows : the mean flexion increased from 148 . 8 + / - 20 . 4 degrees to 175 . 6 + / - 6 . 0 degrees in group 1 , and from 165 . 9 + / - 14 . 1 degrees to 177 . 4 + / - 4 . 4 degrees in group 2 ; internal and external rotation increased from 66 . 8 + / - 20 . 7 degrees and 61 . 9 + / - 22 . 9 degrees to 83 . 2 + / - 10 . 9 degrees and 84 . 4 + / - 9 . 6 degrees in group 1 , and from 75 . 0 + / - 17 . 3 degrees and 70 . 0 + / - 19 . 8 degrees to 87 . 1 + / - 6 . 8 degrees and 84 . 6 + / - 8 . 4 degrees in group 2 , respectively .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 None