Table 2:

Technical information regarding the procedures

Details Regarding Surgery and Rescue
Instrumentation failure
 Screw loosening5 (18.5%)
 Implant mobilization2 (7.4%)
 Broken implants1 (3.7%)
 New fractures4 (14.8%)
 Adjacent segment (A)2 (7.4%)
 Instrumented segment (I)1 (3.7%)
 A + I1 (3.7%)
Revision surgery
 Total9 (33.3%)
 >1 Operation2 (7.4%)
Time interval, rescue to revision surgery
 Average (mo)22.5
Indication for revision surgery
 Adjacent segment degeneration3 (11.1%)
 Screw loosening1 (3.7%)
 Implant mobilization + new fracture1 (3.7%)
 Screw loosening + implant mobilization1 (3.7%)
 Infection1 (3.7%)
 Unknown (surgery at outside institution)2 (7.4%)
Type of revision surgery
 Implant removal3
 Extension of the stabilization2
 Implant removal and extension of the stabilization3
 No data available1
New fractures treatment
 Cementoplasty2
 Conservative treatment2