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Table 1 Characteristics of the studies included

From: Dynamic hip screws versus cannulated screws for femoral neck fractures: a systematic review and meta-analysis

Included study Country Type Mean age (year) Hips analyzed(DHS/CS) gender(Male/female) Interventions Follow-up Outcome
Lee 2007 [9] Taiwan Retrospective 72.8/70.6 40/44 35/49 DHS vs multiple cannulated screws 12
Widhalm 2019 [10] UK Retrospective 76.9(18-100) 254/199 110/343 DHS vs double cannulated screw 24
Watson 2012 [15] Australia RCT 77.9(53-89)/76.7(53-93) 31/29 11/49 DHS vs Cancellous screws 24
Sharma 2018 [16] India RCT NA(21-57) 27/29 - DHS vs Cancellous screws 24
FAITH 2017 [17] Canada RCT 72.2±12.0/72±12.3 542/537 422/648 SHS vs Cancellous screws 24
Gupta 2016 [18] India RCT 40.7(16-60)/39.3(16-60) 40/45 55/30 SHS vs multiple cancellous screws 12 to 36
Sørensen 1992 [19] Denmark RCT 77(52-94) 35/38 18/55 SHS vs three Gouffon screws 36
Madsen 1987 [20] Denmark RCT 75(25-91)/74(34-92) 51/52 25/78 SHS vs Cancellous screws 24
Christie 1988 [21] Scotland RCT 69(26-80) 61/66 - SHS vs double pin 33
Siavashi 2015 [22] Iran RCT 30(18-59)/28(18-60) 30/28 46/12 DHS vs Cancellous screws 12 to 36
Kuokkanen 1991 [23] Finland RCT 60/72.5 17/16 - SHS vs three cancellous screws 24
Chen 2017 [24] China Retrospective 58.3±9.3 /56.8±8.6 42/44 38/48 DHS vs Cannulated compression screw 24 to 36
Hoshino 2016 [25] USA Retrospective 40±12/39±11 48/15 41/21 DHS vs Pauwel screws 4 to 66
Bisaccia 2018 [26] Italy Retrospective 67.8(45-80) 42/75 40/77 DHS vs cannulated screws 12
Stiasny 2008 [27] Denmark Retrospective NA(30-95) 44/70 41/71 DHS vs 3 AO screw 21.5
Tolga 2012 [28] Turkey Retrospective 46(25-67)/45(18-68) 33/33 35/31 DHS vs Cancellous screws 33.6
  1. SHS sliding hip screws, DHS dynamic hip screws, RCT randomized clinical trial; MortalityNon-unionAVNRevision