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🩼 Calcaneal Böhler & Gissane Angles

UseFoot & ankle imaging: weight-bearing foot and lateral calcaneal views — hallux valgus, flatfoot and calcaneal…

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SourceBöhler L. Diagnosis, pathology, and treatment of fractures of the os calcis. J Bone Joint Surg 1931…

Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders

This-shift next steps

After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.

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Methodology · worked example, guidelines & full notes
Clinical takeaway

Lateral calcaneal radiograph.

When to use

Foot & ankle imaging: weight-bearing foot and lateral calcaneal views — hallux valgus, flatfoot and calcaneal fracture assessment.

How it works

Böhler angle < 20°: posterior facet depression (intra-articular fracture); lower is worse Böhler angle 20–40°: normal Böhler angle > 40°: increased Critical angle of Gissane < 120°: decreased Critical angle of Gissane 120–145°: normal Critical angle of Gissane > 145°: increased — posterior facet depression

Key points

  • Lateral calcaneal radiograph.
  • Each value is graded against published reference ranges.
  • Measurement technique and positioning change the numbers — compare like with like on follow-up.
  • Part of the YuanDoctor MSK measurement topic.

References

  • Böhler L. Diagnosis, pathology, and treatment of fractures of the os calcis. J Bone Joint Surg 1931;13:75-89
  • Sanders R, et al. Operative treatment in 120 displaced intraarticular calcaneal fractures. Clin Orthop Relat Res 1993;(290):87-95

Worked calculation

The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.

Contralateral Böhler angle (optional)32 °
Böhler angle15 °
Critical angle of Gissane150 °

→Böhler angle15°

  • Böhler angle：15 ° → < 20°: posterior facet depression (intra-articular fracture); lower is worse
  • Critical angle of Gissane：150 ° → > 145°: increased — posterior facet depression
  • Difference vs contralateral：17° (≥ 10°, supports depression)
Verification & sources · governance
FAQ

Frequently asked questions

What are the limits and cautions when using Calcaneal Böhler & Gissane Angles?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
Does Calcaneal Böhler & Gissane Angles upload patient data? Where is it calculated?
Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
How is Calcaneal Böhler & Gissane Angles calculated in practice? Can you show a worked example?
Inputs: Contralateral Böhler angle (optional) 32 °, Böhler angle 15 °, Critical angle of Gissane 150 ° → Result: Böhler angle 15 °（Böhler angle: 15 ° → < 20°: posterior facet depression (intra-articular fracture); lower is worse, Critical angle of Gissane: 150 ° → > 145°: increased — posterior facet depression, Difference vs contralateral: 17° (≥ 10°, supports depression)）
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