Table 1.
The characteristics of included studies.
| Study(year) | Type of nails | 2-screw group/1-screw group | Follow-up (mean) | Reference type | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cases | Age | Gender | Fracture type (number) | ASA score | ||||||
| (mean) | (% male) | AO/OTA-A1 | AO/OTA-A2 | AO/OTA-A3 | ||||||
| Berger-Groch 2016 | InterTan vs Gamma3 | 55/49 | 81.6/82 | 21.8/24.5 | 14/14 | 41/35 | 2.7/2.7 | 5 years | RCT | |
| Hopp 2016 | InterTan vs Gamma3 | 39/39 | 82.7/80.7 | 18/33.3 | 0/0 | 28/39 | 11/13 | 2.83/2.77 | 1 years | RCT |
| Seyhan 2015 | InterTan vs PFNA | 32/43 | 75.3/75.9 | 25/25.6 | 7/11 | 13/16 | 12/16 | N/A | 1 years | RCT |
| Su 2016 | InterTan vs Gamma3 | 50/50 | 71.1/71.3 | 42/38 | 0/0 | 40/41 | 41/9 | 2.68/2.7 | 1 years | RCT |
| Wang 2013 | InterTan vs PFNA | 20/36 | 73.5/76.8 | 55/47.2 | 2/7 | 13/26 | 5/3 | N/A | 4.6 months | CS |
| Wu 2014 | InterTan vs Gamma3 | 87/174 | 71.4/72.6 | 27/24.7 | 0/0 | 72/146 | 15/28 | 2.45/2.48 | 1 year | CS |
| Yu 2016 | InterTan vs PFNA | 75/75 | 75.2/74.2 | 44.4/46.6 | 0/0 | 40/35 | 35/37 | N/A | 1.7 years | CS |
| Zehir 2015 | InterTan vs PFNA | 102/96 | 76.8/77.2 | 38.2/38.5 | 0/0 | 93/92 | 9/4 | N/A | 1 years | CS |
| Zhang 2013 | InterTan vs PFNA | 57/56 | 72.9.72.4 | 34/40.3 | 0/0 | 45/45 | 12/11 | 2.47/2.57 | 1 years | RCT |
AO/OTA: Arbeitsge-meinschaft für Osteosynthesefragen/ Orthopaedic Trauma Association, N/A: Not Applicable, ASA: American Society of Anesthesiologists, RCT: Randomized Controlled Trial, CS: Cohort Study, PFNA: Proximal Femoral Nail Antirotation.