《Table 1 Key characteristics of the included studies》

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《初次全膝关节置换后不同患肢体位对临床预后的影响:一项随机对照试验的Meta分析（英文）》

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Note:F:Flexion group；E:extension group；OA:osteoarthritis；RA:rheumatoid arthritis；PO:patellofemoral osteoarthritis；NA:not available.

A total of 4 317 relevant studies were initially identified. After duplicate studies were removed，2 664 studies were available for assessing titles and abstracts for eligibility.Of these，15 articles were then evaluated for full-text articles.We eventually identified 10 articles[13-22]meeting theInclusive criteria（Figure 1）.Among these，the article by Napier et al.[22]had two RCTs and the second RCT had multiple comparisons.All selected studies were in English and were published between 2003 and 2018.Fivestudies[13-14，17，19，21]were performed in China，two[15，22]in UK，two[18，20]in Italy，and one[16]in Australia.The keycharacteristics of these studies are illustrated in Table 1，while study treatment protocol of the included study is shown in Table 2.