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Changes in retro-odontoid mass after upper cervical spine surgery
Jae-Won Shin1,2, Kyung-Soo Suk3, Hak-Sun Kim2
1Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, 100 Ilsan-ro, Goyang, 10444, Republic of Korea.
Scientific Reports
|November 22, 2022
Summary
Retro-odontoid masses (R-OMs) often resolve after upper cervical spine fusion surgery. Stabilization through fusion is key for treating these non-neoplastic spinal masses and improving patient outcomes.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Radiology
Background:
- Retro-odontoid masses (R-OMs) are non-neoplastic lesions located posterior to the dens.
- Understanding R-OM behavior after upper cervical spine surgery is crucial for treatment planning.
Purpose of the Study:
- To evaluate radiographic and clinical outcomes following upper cervical spine surgery.
- To assess changes in retro-odontoid masses (R-OMs) after surgical intervention.
Main Methods:
- Retrospective study of 69 patients undergoing upper cervical spine surgery (fusion or decompression).
- Preoperative and postoperative MRI, X-ray, and CT scans were used to measure R-OM size, space available for the cord (SAC), and atlantodental intervals.
- Clinical outcomes assessed via pain scales, Japanese Orthopedic Association score, and neck disability index.
Main Results:
- Postoperative improvements observed in anterior and posterior atlantodental intervals and SAC.
- Significant reductions in neck/arm pain and neck disability index, with increased Japanese Orthopedic Association scores.
- R-OMs decreased in size or disappeared in all fusion surgery cases, but not in the decompression case.
Conclusions:
- Upper cervical spine fusion surgery leads to significant radiographic and clinical improvements.
- Fusion surgery is effective in reducing or eliminating retro-odontoid masses (R-OMs).
- Stabilization via fusion is essential for managing R-OMs.
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