Minimally invasive percutaneous C1–C2 transarticular screw fixation as a palliative management option in C2 metastases
Bibliographic record
Abstract
Bone metastasis in patients with esophageal carcinoma is rare but serious, often resulting in structural complications of the spine such as atlantoaxial instability and C2 metastases. Atlantoaxial instability is usually managed surgically using screw-rod constructs; however, in patients undergoing radiotherapy, surgical wound healing is a concern. We present a technical note involving a terminally ill patient diagnosed with esophageal carcinoma who suffered from a metastatic lytic lesion of C2 and mechanical neck pain. Due to the patient starting palliative radiotherapy, a percutaneous approach and transarticular screws were used to achieve atlantoaxial fixation and minimize the surgical wound while maintaining the midline tension band. Significant clinical improvement was found. Our patient was able to begin palliative radiotherapy within 1 week of surgery, without surgical and wound complications. This report provides unique insight into the utilization of a minimally invasive approach for pain management and stabilization of the cervical spine for oncology patients.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".