Table 1.

Characteristics of included studies

Study	Country	Number of patients		Age of patients (years)	Intervention		Indication	Followup (years)
		Arthroplasty	Internal fixation		Arthroplasty	Internal fixation
Blomfeldt et al. [3] 2005	Sweden	49	53	79.2/81.4	THA	2 cannulated screws	Displaced intracapsular fractures of hip, Garden Stages III/IV	4
Cao et al. [4] 2014	China	157	128	75.9/76.8	THA	3 hollow compression screws	Displaced femoral neck fractures	5
Chammout et al. [5] 2012	Sweden	43	57	78/79	THA	2 cannulated screws	Displaced femoral neck fractures	17
Davison et al. [6] 2001	UK	187	93	75/73	Hemiarthro-plasty	AMBI compression hip screw and 2-hole plate	Displaced intracapsular fracture of the proximal femur	5
Johansson [10] 2014	Sweden	68	78	83.8/83.7	THA	2 parallel and percutaneously inserted screws	Displaced femoral neck fracture, Garden Stages III/IV	15
Leonardsson et al. [12] 2010	Sweden	192	217	81.6/81.5	THA, hemiarthro-plasty	Hansson hook pins or Olmed screws	Displaced femoral neck fracture, Garden Stages III/IV	10
Mouzopoulos et al. [14] 2008	Greece	71	38	73.4/75.4	THA, hemiarthro-plasty	Richards screw-plat	Displaced subcapital fracture, Garden Stages III/IV	4
Parker and Pryor [16] 2010	UK	229	226	82	Hemiarthro-plasty	3 AO screws	Femoral neck fracture	15
Ravikumar and Marsh [17] 2000	UK	91	91	> 65	THA, hemiarthro-plasty	Richards compression screw and plate	Displaced femoral neck fracture, Garden Stages III/IV	13
Rödén et al. [18] 2003	Sweden	47	53	81/81	Hemiarthro-plasty	von Bahr screws	Displaced femoral neck fracture, Garden Stages III/IV	5
Støen et al. [21] 2014	Norway	110	112	> 80	Hemiarthro-plasty	Two parallel cannulated screws	Femoral neck fracture, Garden Stages III/IV	6