Table 1.

Overview of included studies^a.

Study (year)	Journal	Evidence level	Study years	Control group	Number of hips	Mean follow-up (months)
Chiu34 2015	Orthopedics	IV	1996–2010	No	56	120
Khurana35 2015b	Am J Orthop	III	2005–2013	Yes [Primary OA]	22	53
Morison36 2016	Clin Orthop Relate Res	III	1987–2011	Yes [Primary OA]	74	96
Lizaur-Utrilla37 2012	J Trauma Acute Care Surg	III	1992–2005	Yes [Primary OA]	24	101
Zhang38 2011	J Arthoplasty	IV	1998–2007	No	55	64
Ranawat39 2009	J Arthoplasty	IV	1995–2003	No	32	56
Berry40 2002	Clin Orthop Relate Res	IV	1984–1990	No	34	143
Bellabarba41 2001	J Bone Joint Surg	IV	1984–1995	No	30	63
Huo42 1999	J Arthoplasty	IV	1985–1993	No	21	65
Weber43 1998	J Bone Joint Surg	IV	1970–1993	No	66	115

OA: osteoarthritis.

^aThe majority of studies reported both mean postoperative Harris hip score and overall revision rate.

^bKhurana study included data for femoral neck fractures; we examined only data involving fractures of the acetabulum, which totaled 22 hips.