Infant Hip Ultrasound Graf Classification — free guideline decision tool
Enter alpha and beta angles and age in weeks: Graf type I–IV / D with management (observe, repeat or abduction treatment). Includes how to measure and what each value means. Instant, browser-side.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
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.
| Alpha angle | 56 ° |
|---|---|
| Beta angle | 70 ° |
| Age | 8 weeks |
| Labrum position (alpha < 43°) | Pushed cranially (everted) |
→GrafIIa+
- α / β：56° / 70°, 8 weeks
- Management：Physiologic immaturity, repeat in 4–6 weeks until mature (type I by 12 weeks)
Common questions
What is Infant Hip Ultrasound Graf Classification?
Enter alpha and beta angles and age in weeks: Graf type I–IV / D with management (observe, repeat or abduction treatment). Includes how to measure and what each value means. Instant, browser-side.
How is Infant Hip Ultrasound Graf Classification calculated? What is the core formula?
Ia / Ib α ≥ 60° (β ≤ 55° Ia, > 55° Ib): Mature hip, no treatment IIa α 50–59°, < 12 weeks (after 6 weeks α < 55° = IIa−): Physiologic immaturity, repeat; treat IIa− IIb α 50–59°, ≥ 12 weeks: Delayed ossification, abduction treatment IIc α 43–49°, β ≤ 77°: Critical hip, abduction treatment D α 43–49°, β > 77°: Decentering hip, treat III / IV α < 43°, labrum cranial (III) / caudal (IV): Dislocated, reduction then abduction
When is Infant Hip Ultrasound Graf Classification used?
Pediatric hip imaging: infant hip ultrasound and pediatric AP pelvis — DDH screening and cerebral palsy hip surveillance.
What are the key clinical points for Infant Hip Ultrasound Graf Classification?
Standard coronal plane in lateral decubitus showing a straight iliac line, the lower limb of the ilium and the labrum. 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.
What are the limits and cautions when using Infant Hip Ultrasound Graf Classification?
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 Infant Hip Ultrasound Graf Classification 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 Infant Hip Ultrasound Graf Classification calculated in practice? Can you show a worked example?
Inputs: Alpha angle 56 °, Beta angle 70 °, Age 8 weeks, Labrum position (alpha < 43°) Pushed cranially (everted) → Result: Graf IIa+（α / β: 56° / 70°, 8 weeks, Management: Physiologic immaturity, repeat in 4–6 weeks until mature (type I by 12 weeks)）
Run Infant Hip Ultrasound Graf Classification now
Enter alpha and beta angles and age in weeks: Graf type I–IV / D with management (observe, repeat or abduction treatment). Includes how to measure and what each value means. Instant, browser-side.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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