Table 1.

Inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
Published papers in PubMed (Medline), Embase or Cochrane Central Register of Controlled Trials	Papers in languages other than English or Chinese whose English abstract could be searched in the database
Papers in English or Chinese whose English abstract could be searched in the database	THA in other approaches
Randomized controlled trials or clinical comparative trials	Case series or case report
Comparing soft tissue repair including rotators or capsules repair with no soft tissue repair in THA
THA in posterior approach