Table 4.
Nonunion/delayed union information including secondary surgery information
|
Exchange nailing |
Dynamization |
EN vs dynam |
|||
| Union/total reported | Significant vs total union rate | Union/total reported | Significant vs total union rate | P-values | |
| No. of patients | 556/644 | - | 84/131 | - | P < 0.0001 |
| Reamed vs unreamed | |||||
| Reamed | 516/598 | NS | NA | - | - |
| Unreamed | 19/22 | NS | NA | - | - |
| Static vs dynamic | |||||
| Dynamic | 97/115 | NS | NA | - | - |
| Static | 173/210 | NS | NA | - | - |
| No locking (/Kuntschner) | 35/36 | NS | NA | - | - |
| Delayed union | 25/27 | NS | 45/55 | P = 0.0228 | P = 0.3199 |
| Nonunion (+type) | 491/567 | NS | 24/57 | P = 0.0063 | P < 0.0001 |
| Elephant | 6/7 | NS | 0/0 | - | - |
| Horse | 12/18 | P = 0.0310 | 0/0 | - | - |
| Oligotrophic | 22/22 | NS | 16/22 | NS | P = 0.0211 |
| Hypotrophic | 9/13 | NS | 0/0 | - | - |
| Atrophic | 80/99 | NS | 5/12 | NS | P = 0.0064 |
| Hypertrophic | 72/83 | NS | 9/11 | NS | NS |
| Bone grafting used | |||||
| Yes | 98/106 | NS | 2/2 | NS | NS |
| No | 165/190 | NS | 32/53 | NS | P < 0.0001 |
| Infected | 19/30 | P = 0.0019 | 0/0 | - | - |
| Patients lost to follow-up | 28 | - | 4 | - | - |
| Major complications following surgery | 45 | - | 13 | - | NS |
| Patients achieving union after additional surgery vs surgeries attempted | 82/92 | - | 34/34 | - | - |
NA: Not available; NS: Not significant.