Table 1.

Studies on THA surgical technique

Study	Level of evidence	Number of patients	Assessment points	Conclusion
Ogonda et al. [41] (2005)	I	219	Compared THA via mini-incision versus the conventional approach	Quicker recovery in terms of discontinuation of walking aids and return to daily activities with mini-posterior-incision THA
Dorr et al. [11] (2007)	I	231	Compared THA via posterior mini-incision to conventional posterior approach	Better pain control, earlier discharge to home, and less use of assistive devices with minimally
Pour et al. [50] (2007)	II	100	Compared THA via mini-incision to conventional anterolateral approach	No difference in SF-36, Harris Hip Score, WOMAC Score, or lower extremity score due to incision length
Pagnano et al. [43] (2008)	I	72	Compared the posterior mini-incision to two-incision THA	Quicker recovery in terms of discontinuation of walking aids and return to daily activities with mini-posterior-incision THA
Ward et al. [63] (2008)	II	69	Used gait analysis to compare conventional versus minimally invasive THA	Faster improvement in gait velocity with similar outcomes at 3 months