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Table 1 General information of patients with humeral, femoral or tibial fractures in two groups

From: Comparison of our self-designed rotary self-locking intramedullary nail and interlocking intramedullary nail in the treatment of long bone fractures

Fractures Operation RSIN IIN
Humerus (n = 494) Age (years) 33 ± 15 32 ± 16
Time from injury to operation (day) 6 ± 12 6 ± 14
Causes of injury (n)   
 Traffic accident 140 142
 Falling injury 56 56
 Crashing injury of heavy object 35 30
 Injury caused by stroke 16 19
Fracture type (n)   
 A 100 95
 B 120 113
 C 27 39
Anterograde fixation (n) 137 317
Retrograde fixation (n) 110 0
Open reduction and internal fixation (n) 221 222
Closed reduction and internal fixation (n) 26 25
Femur (n = 572) Age (years) 37 ± 15 37 ± 12
Time from injury to operation (day) 7 ± 15 7 ± 17
Causes of injury (n)   
 Traffic accident 170 182
 Falling injury 86 82
 Crashing injury of heavy object 28 22
Fracture type (n)   
 A 110 125
 B 97 100
 C 79 61
Anterograde fixation (n) 171 174
Retrograde fixation (n) 115 112
Open reduction and internal fixation (n) 251 267
Closed reduction and internal fixation (n) 35 19
Tibia (n = 638) Age (years) 32 ± 17 32 ± 18
Time from injury to operation (day) 8 ± 20 8 ± 20
Causes of injury (n)   
 Traffic accident 185 188
 Falling injury 87 87
 Crashing injury of heavy object 45 38
 Injury caused by stroke 2 6
Fracture type (n)   
 A 150 130
 B 100 115
 C 69 74
Anterograde fixation (n) 319 319
Retrograde fixation (n) 0 0
Open reduction and internal fixation (n) 173 173
Closed reduction and internal fixation (n) 146 146
  1. RSIN rotary self-locking intramedullary nail; IIN intramedullary interlocking nail.