Table 2.
Preliminary results and summary of characteristics in seven patients undergoing ATS
| Case no. | Age (years), sex | Diagnosis | Notes | Screw length (mm) | Complications | Follow-up (months) | Preliminary outcome |
|---|---|---|---|---|---|---|---|
| 1 | 35, m | Jefferson-4-part-#, burst # C5 | Tetraplegia sub-C5, ant. corpectomy w/fusion C4-6 using single approach | 40 | Subluxation at C6/7 w/o consequences | 15 | Stable ATS fixation; mobilized, but chairbound, C1-fracture united |
| 2 | 82, m | Kidney cell carcinoma with instability C1-2 and collapse of right lateral mass | Curettage of osteolysis C2 and supplementation of defect with PMMA | 40 | None | 3 | Patient died 3 months postoperative due to systemic progress of tumor disease |
| 3 | 68, f | Odontoid # type II w/fused atlantodental joint | Additionally odontoid screw fixation: ‘tripple fixation’ | 38 | Odontoid instability due to screw cut-out → posterior fusion C1-2 using ‘neon’-clamps | 6 | Pain-free, stable ATS fixation, C2-fracture united, posterior fusion C1-2 |
| 4 | 93, f | Odontoid # type IIa w/fused atlantodental joint | Fall out of bed, no change of ATS in control CT | 38 | None | 6 | Pain-free, stable ATS fixation; ROM cervical spine flex/ext: 30°–0°–50°; rot.: 30°–0°–30°, C2-fracture united |
| 5 | 80, f | Odontoid # type II w/fused atlantodental joint | – | 38 | None | 4 | Pain-free, stable ATS fixation, C2-fracture united |
| 6 | 26, m | Jefferson-3-part-# w/torn transverse atlantal ligament | Referred pain C2 left, preoperative HALO-traction 24 h | 36 | None | 3 | Pain-free, stable ATS fixation, implant removal scheduled, progressed union C1 |
| 7 | 84 ,f | Nonunion of odontoid fracture type II with screw cut-out after odontoid screw fixation | Implant removal and revision surgery using simultaneous approach | 36 | None | 1 | Pain-free, stable ATS fixation |