Clinical calculator summary
Original 1995 Bauer-Wedin Score
Clinical calculator summary
Original 1995 Bauer-Wedin Score
A five-factor favorable prognostic score for surgically treated skeletal metastases.
Evidence-based context for fast calculator use
- Purpose:
- Reproduce the original score and its matched historical cohort outcome row.
- Population:
- Historical preoperative cohort with surgically treated spinal or extremity skeletal metastases.
- Factors:
- No visceral or brain metastases, No pathological fracture, Solitary skeletal metastasis, Non-lung primary, Breast/kidney/lymphoma/myeloma primary
- Reference:
- Bauer HCF, Wedin R. Acta Orthop Scand. 1995;66(2):143-146.
Bauer Score (Bone Mets)
Clinical Context & Background
Original 1995 Bauer-Wedin score = no visceral or brain metastases + no pathological fracture + solitary skeletal metastasis + non-lung primary + breast/kidney/lymphoma/myeloma primary.Reference Data
| Original score | Historical cohort outcome |
|---|---|
| 0-1 | All patients died within 6 months |
| 2-3 | 25% 1-year survival |
| 4-5 | 50% 1-year survival |
Clinical Workflow
Use, Interpret, And Continue The Patient Pathway
Expand for workflow guidance, limitations, examples, and related next steps.
Clinical Workflow
Use, Interpret, And Continue The Patient Pathway
Expand for workflow guidance, limitations, examples, and related next steps.
When To Use
- Use for historical preoperative prognostic context in a patient with established skeletal metastases being considered for surgery.
- Classify all four required clinical inputs deliberately; a favorable primary contributes two distinct favorable factors.
How To Interpret
- Add the five favorable factors and match the total to one of the three original cohort rows.
- Treat the outcome row as a historical cohort observation, not an individual survival forecast.
What To Do Next
- Integrate disease biology, systemic options, mechanical stability, neurologic status, symptoms, goals, and multidisciplinary assessment.
- Use current disease-specific and surgical guidance rather than allowing this historical score alone to determine treatment.
Limitations
- Original cohort included surgically treated spinal and extremity metastases.
- Not the Modified Bauer score and not a current treatment-selection rule.
- Historical outcomes may not represent contemporary systemic therapy or supportive care.
Validated Population
Patients in the original 1995 surgically treated skeletal-metastasis cohort.
Favorable primary
Breast, kidney, lymphoma, or myeloma receives one point for being non-lung and one additional favorable-primary point.
Calculation verification history
Verified
Calculation verification history
Verified: Production browser revalidation
- Five source-backed Bauer-Wedin cases passed through visible production controls across scores 0, 1, 2, 3, and 5.
- No unexpected N/A, literal undefined value, stale control, or browser-console error was observed.
Case-level evidence is retained in validation/browser-revalidation/bauer-bone-metastases-survival-score-2026-08-03.json.
: Production browser validation
- Ten source-backed cases were exercised on the public production route through visible browser controls; 10/10 case records passed their expected-versus-observed assertions across 11 visible submissions.
- Overall browser status: failed-console. medium: Production emitted minified React error #418 during route loads/reloads used by this run.
- Case-level inputs, expected and observed results, reset/repeat behavior, failure reproductions, and console evidence are retained in the production-browser evidence record.
Case-level production evidence is retained in validation/browser-production/bauer-bone-metastases-survival-score.json.
: Full validation test
- 384/384 source-rule, boundary, invalid-input, trace, scope, UI/integration, immutability, registry, and no-panel-inheritance checks passed.
- No registered master panel calculates Bauer; no panel receives inherited verification.
: Calculation and input-contract correction
- Restored all five original favorable factors: no visceral/brain metastases, no fracture, solitary skeletal metastasis, non-lung primary, and the additional favorable-primary point for breast, kidney, lymphoma, or myeloma.
- Corrected reversed fracture scoring and replaced unsupported groups, median-survival values, favorable defaults, point codes, coercion, and directive treatment wording with strict semantic inputs, the three original cohort outcome rows, and cautious historical context.
Verification confirms the calculator implementation against the cited model; it is not independent clinical validation, regulatory approval, or medical advice.
Related Tools
Frequently Asked Questions
Why can the primary tumor contribute two points?
The original score separately awards one point for a non-lung primary and another for breast, kidney, lymphoma, or myeloma.
Does a pathological fracture add a point?
No. Absence of pathological fracture is the favorable factor and adds one point.
Is this the Modified Bauer score?
No. This page reproduces the original five-factor 1995 Bauer-Wedin score.
Evidence-based oncology decision support. Verify with clinical guidelines.