PMC6778327_01
(a) The magnetic resonance imaging showed a herniated intervertebral disc (arrow), foraminal stenosis at C5-6 left. (b) The computed tomography showed a foraminal stenosis (arrow) at C5-6 left. (c) The flexion view, (d) The extension view showed disc space narrowing and bony spur at C5-6.
SNI-10-183-g001.jpg
PMC6778327_01_SNI-10-183-g001.jpg
F1
A 52-year-old male underwent an uneventful C5-C6 ADR for an MR documented herniated disc with foraminal stenosis [Figure 1a-d].
(a) Postoperative - 1 week, (b) Postoperative - 1 week, (c) Postoperative - 2 months, (d) Postoperative - 2 months, (e) Postoperative - 14 months, (f) Postoperative - 14 months showed an aggravation of cervical instability at C5-6. Cervical instability at C5-6, the ADR site, aggravated in the temporal order of (a-f). (g) Radiograph obtained after a revision operation, in which the ADR implant was removed and ACDF was performed.
SNI-10-183-g002.jpg
PMC6778327_01_SNI-10-183-g002.jpg
F2
ACDF [Figure 2a-g]. At surgery, it was difficult to pull out the ADR. As this required excessive widening of the interbody space, a secondary C5-C6 ACDF was necessitated. One-year postoperatively, the patient was radiographically stable and asymptomatic [Figure 2g].