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Clinical calculator summary

Katagiri Score (Bone Mets)

The Katagiri Score predicts survival in patients with skeletal metastases.

Evidence-based context for fast calculator use

Purpose:
Katagiri score predicts survival in patients with skeletal metastases to guide palliative versus curative surgical intervention decisions.
Population:
patients undergoing skeletal metastasis stability, fracture-risk, survival, or operative assessment
Factors:
Primary Lesion Growth Rate, Visceral or Cerebral Metastases?, Abnormal Lab Data?, ECOG Performance Status, Previous Chemotherapy?, Multiple Bone Metastases?
Reference:
Katagiri H, Okada R, Takagi T, et al. Predicted prognosis of patients with bone metastasis: a scoring system. Cancer Med. 2014;3(5):1287-1294.
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Katagiri Score (Bone Mets)

Clinical Context & Background

The Katagiri Score predicts survival in patients with skeletal metastases. It helps determine the treatment goal (curative/wide excision vs palliative) by assessing Primary Site, Visceral Mets, Lab data, ECOG PS, Chemo history, and Multiple Bone Mets.
Primary Source EvidenceKatagiri H, Okada R, Takagi T, et al. Predicted prognosis of patients with bone metastasis: a scoring system. Cancer Med. 2014;3(5):1287-1294.
Formula Logic
Sum of risk points (0-10).

Reference Data

Risk GroupScore1-Year Survival Rate
Low Risk0 - 391 - 98%
Intermediate4 - 646 - 76%
High Risk7 - 106 - 15%

Clinical Workflow

Use, Interpret, And Continue The Patient Pathway

Expand for workflow guidance, limitations, examples, and related next steps.

When To Use

  • Use Katagiri Score (Bone Mets) when katagiri score predicts survival in patients with skeletal metastases to guide palliative versus curative surgical intervention decisions.
  • Confirm that the patient, diagnosis, disease phase, and available inputs match the cited model before calculation.

How To Interpret

  • Interpret the displayed result using the calculator-specific formula and reference table, spanning Low Risk through High Risk.
  • A boundary result should prompt input verification and clinical review rather than false precision.

What To Do Next

  • Combine the score with neurologic examination, mechanical pain, imaging, oncologic prognosis, radiosensitivity, surgical options, and patient goals.
  • Document the inputs, result, timing, and clinical context so the assessment can be reproduced.

Limitations

  • Fracture, spinal-instability, survival, and surgical-selection scores measure different domains and cannot substitute for urgent specialist assessment.
  • The result supports clinician judgment and does not independently determine treatment.

Validated Population

patients undergoing skeletal metastasis stability, fracture-risk, survival, or operative assessment

How to apply this result

For a representative case, verify Primary Lesion Growth Rate, Visceral or Cerebral Metastases?, Abnormal Lab Data?, calculate the result, and confirm that its classification matches the highlighted reference band before continuing the disease-specific pathway.

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Frequently Asked Questions

When should Katagiri Score (Bone Mets) be used?

Use it for patients undergoing skeletal metastasis stability, fracture-risk, survival, or operative assessment when all required inputs and the intended clinical setting are confirmed.

Can Katagiri Score (Bone Mets) determine treatment by itself?

No. Interpret the result with the cited evidence, complete clinical assessment, current guidelines, and patient-specific goals.

Evidence-based oncology decision support. Verify with clinical guidelines.