Table 4: 6 and 12 Month Postoperative CT Scans

Description 6 Months N =19 12 Months N=15

Patients with lucent implant 5 /19 4/15

Total number of implants with lucency 8 /55 7/45
Complete 0 2
Incomplete 8 5

Implants with lucency
Upper Implant 0 4
Second Implant 3 1
Third Implant 5 2

Location of implant lucency
Sacral Side 7 3
Iliac Side 1 2
Both 0 2

Patients with ingrowth into implants 18/19 12/15

Total number of implants with ingrowth 43/55 33/45
Sacral Side 1 1
Iliac Side 11 5
Both 31 27

Bone across SI Joint 8/19 8/15
None 11 7
Non-contiguous 4 3
Contiguous <1cm 4 4
Contiguous >1cm 0 1