According to Gram Research analysis, a 2026 cohort study of 122 postmenopausal women found that five blood markers—measured before and immediately after spine surgery—can predict nerve pain risk with 82% accuracy. High blood sugar and low protein levels after surgery, combined with low vitamin D and poor bone density before surgery, significantly increased the risk of developing intercostal neuralgia, a painful nerve condition affecting the ribs. This discovery could help doctors identify high-risk patients early and implement preventive strategies.
Researchers studied 122 postmenopausal women who had a minimally invasive spine procedure called vertebroplasty to treat broken vertebrae caused by osteoporosis. They found that simple blood tests taken before and after surgery could predict which patients would develop intercostal neuralgia—a painful nerve condition affecting the ribs. By measuring five specific markers including blood sugar, protein levels, vitamin D, and bone density, doctors created a predictive model that was 82% accurate at identifying high-risk patients. This discovery could help doctors prepare patients better and manage pain more effectively after spine surgery.
Key Statistics
A 2026 cohort study of 122 postmenopausal women undergoing spine surgery found that elevated blood sugar on postoperative day 1 increased the risk of developing intercostal neuralgia by 2.25 times compared to normal glucose levels.
According to a single-center cohort study published in 2026, a combined predictive model using five blood markers achieved 82% accuracy (AUC of 0.82) in identifying which spine surgery patients would develop nerve pain complications.
A 2026 study of 122 postmenopausal women found that higher vitamin D levels before spine surgery reduced the risk of post-operative nerve pain by 9% for each unit increase in vitamin D concentration.
Research from a 2026 cohort study showed that patients with better bone density scores had 82% lower risk of developing nerve pain after vertebroplasty compared to those with severe osteoporosis.
The Quick Take
- What they studied: Whether blood tests taken before and after spine surgery could predict which patients would develop painful nerve complications (intercostal neuralgia) after a procedure called vertebroplasty used to treat broken spine bones in older women.
- Who participated: 122 postmenopausal women (average age not specified) who had vertebroplasty surgery between December 2023 and June 2025 at a single hospital. All patients had osteoporotic spine fractures. About 43% developed nerve pain after surgery, while 57% did not.
- Key finding: Five blood markers—bone density score, blood sugar levels after surgery, protein levels after surgery, vitamin D before surgery, and fracture location—could predict nerve pain risk with 82% accuracy. High blood sugar and lower protein levels after surgery increased risk, while higher vitamin D and better bone density protected against nerve pain.
- What it means for you: If you’re having this spine surgery, your doctor may soon be able to use simple blood tests to predict your risk of developing nerve pain afterward. This could help doctors prepare you with better pain management strategies before complications develop. However, this is early research from one hospital, so more studies are needed before this becomes standard practice.
The Research Details
This was a retrospective cohort study, meaning researchers looked back at medical records of patients who had already undergone surgery. They compared 52 patients who developed intercostal neuralgia (nerve pain affecting the ribs) with 70 patients who did not develop this complication. Researchers collected blood samples before surgery and on the first day after surgery, measuring six different markers: vitamin D, alkaline phosphatase, calcium, phosphorus, protein (albumin), and blood sugar (glucose).
The researchers used statistical methods called logistic regression to identify which blood markers were most strongly connected to nerve pain development. They then combined the five most important markers into a single predictive model and tested how well it could predict which patients would get nerve pain. They used a method called ROC curve analysis to measure the model’s accuracy, similar to how a weather forecast is tested for accuracy.
Intercostal neuralgia is a painful complication that affects quality of life after spine surgery, but doctors currently have no reliable way to predict who will develop it. By identifying blood markers that predict this complication, doctors could potentially intervene earlier with preventive treatments or pain management strategies. This approach uses routine blood tests that are already done before surgery, making it practical and cost-effective.
This study has several strengths: it used objective blood measurements rather than subjective assessments, included a reasonable sample size (122 patients), and validated the predictive model using statistical methods. However, it was conducted at a single hospital, which limits how well the results might apply to other populations. The study was also retrospective, meaning researchers couldn’t control all variables as carefully as they could in a prospective study. The journal (Annali italiani di chirurgia) is a peer-reviewed medical publication, suggesting the work met scientific standards for publication.
What the Results Show
The study identified five independent predictors of nerve pain after spine surgery. Higher blood sugar levels on the first day after surgery significantly increased nerve pain risk (2.25 times higher risk for each unit increase). In contrast, higher protein levels after surgery were protective, reducing risk by 10% for each unit increase. Patients with higher vitamin D levels before surgery had 9% lower risk for each unit increase. Bone density score was strongly protective—patients with better bone density had 82% lower risk compared to those with worse bone density. Finally, fracture location mattered: fractures in the lower thoracic spine (mid-back) had 72% lower risk compared to higher locations.
When researchers combined all five markers into a single predictive model, it performed very well. The model achieved an area under the curve (AUC) of 0.82 on a scale where 1.0 is perfect prediction and 0.5 is random guessing. This means the model correctly identified high-risk and low-risk patients about 82% of the time. The model’s predictions also matched actual outcomes very closely when tested, with a mean absolute error of only 0.048, indicating excellent calibration.
The study also examined other blood markers like alkaline phosphatase, calcium, and phosphorus, but these were not independently associated with nerve pain risk in the final analysis. This suggests that while these markers reflect bone health, they don’t directly predict this specific complication. The finding that fracture location matters—with lower thoracic fractures having lower risk—provides anatomical insight into why some patients are more vulnerable to this nerve complication.
This research addresses a gap in existing knowledge. While previous studies have identified intercostal neuralgia as a complication of vertebroplasty, no prior research had systematically examined perioperative blood markers as predictors. The study’s finding that postoperative blood sugar and protein levels matter aligns with general surgical literature showing that metabolic status affects surgical outcomes and complications. The protective effect of vitamin D is consistent with broader research showing vitamin D’s role in nerve health and bone metabolism.
This study was conducted at a single hospital in Italy, so results may not apply equally to other populations or healthcare settings. The study was retrospective, meaning researchers couldn’t control all variables as carefully as in a prospective study. The relatively small sample size (122 patients) limits statistical power, though it was adequate for the analysis performed. The study didn’t examine why these blood markers predict nerve pain—the mechanism remains unclear. Additionally, the study only included postmenopausal women, so results may not apply to men or younger women. Finally, the study period was very recent (December 2023 to June 2025), so long-term follow-up data on whether these predictions hold over time is not yet available.
The Bottom Line
If you’re scheduled for vertebroplasty surgery for an osteoporotic spine fracture, ask your doctor about blood tests for vitamin D, protein levels, and blood sugar control before surgery. Ensure your vitamin D levels are adequate before surgery if possible. Maintain good nutrition to support protein levels. Control blood sugar carefully, especially in the immediate postoperative period. These measures may reduce your risk of developing nerve pain complications. However, these recommendations are based on early research from one hospital, so discuss them with your surgical team rather than making changes on your own. (Confidence level: Moderate—promising findings but needs confirmation in larger studies.)
This research is most relevant to postmenopausal women scheduled for vertebroplasty due to osteoporotic spine fractures. It may also be relevant to younger women or men undergoing similar procedures, though the study didn’t include these groups. Spine surgeons and orthopedic specialists should pay attention to these findings for risk stratification. Patients with multiple risk factors (low vitamin D, poor nutrition, high blood sugar, severe osteoporosis, or fractures in upper thoracic spine) should have detailed discussions with their surgical team about nerve pain prevention.
Nerve pain complications typically develop within the first few days to weeks after surgery. The blood markers measured in this study were collected before surgery and on postoperative day 1, so risk assessment could theoretically be done very early. If preventive interventions are developed based on this research, benefits would likely be seen within the first month after surgery, when most nerve pain complications occur.
Frequently Asked Questions
Can blood tests predict nerve pain after spine surgery?
Yes, according to a 2026 study of 122 women, five blood markers—vitamin D, blood sugar, protein levels, bone density, and fracture location—predicted nerve pain risk with 82% accuracy. High blood sugar and low protein after surgery increased risk, while higher vitamin D and better bone density were protective.
What blood sugar levels increase nerve pain risk after vertebroplasty?
The 2026 study found that elevated blood glucose measured on the first day after surgery was the strongest predictor of nerve pain, increasing risk by 2.25 times. Keeping blood sugar controlled before and immediately after surgery may reduce this complication risk.
Does vitamin D prevent nerve pain after spine surgery?
A 2026 cohort study found that higher preoperative vitamin D levels were protective, reducing nerve pain risk by 9% for each unit increase. Patients with adequate vitamin D before surgery had lower complication rates, suggesting vitamin D optimization before surgery may help.
Who is most at risk for nerve pain after vertebroplasty?
According to 2026 research, postmenopausal women with low vitamin D, poor nutrition (low protein), high blood sugar, severe osteoporosis, and fractures in the upper thoracic spine face highest risk. Those with multiple risk factors should discuss preventive strategies with their surgeon.
Can I reduce my nerve pain risk before spine surgery?
Yes, based on this 2026 study, optimize vitamin D levels, eat adequate protein, control blood sugar, and maintain good bone health before surgery. These modifiable factors were identified as protective against post-operative nerve pain in the research.
Want to Apply This Research?
- Track your blood sugar levels daily for 2 weeks before surgery and 4 weeks after surgery. Record fasting glucose readings each morning and note any spikes after meals. Compare your readings to your baseline to identify patterns that might increase nerve pain risk.
- Work with your doctor to optimize three modifiable factors before surgery: (1) Increase vitamin D intake through supplements or sunlight exposure to reach optimal levels; (2) Eat protein-rich foods at every meal to support muscle and tissue healing; (3) Manage blood sugar through diet and exercise, especially reducing refined carbohydrates and sugary foods.
- Create a pre-surgery health dashboard tracking: vitamin D level (target: 30-50 ng/mL), daily fasting blood glucose (target: under 100 mg/dL), daily protein intake (target: 1.2g per kg body weight), and weekly weight to ensure stable nutrition. After surgery, continue tracking blood glucose for 4 weeks and report any unusual spikes to your doctor, as elevated glucose on postoperative day 1 was the strongest risk factor identified.
This research is preliminary and comes from a single hospital study. The findings have not yet been confirmed in larger, multi-center trials. Blood tests may help predict risk, but they cannot guarantee whether you will or won’t develop nerve pain. Do not make any changes to your medical care, supplements, or diet based on this article without consulting your surgeon and primary care physician. If you experience nerve pain or other complications after spine surgery, contact your healthcare provider immediately. This article is for educational purposes only and should not replace professional medical advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.