Observed arrival · 2026-10-25
SagitalApp: spine-alignment measurements across Horos, Weasis and the web
A free, open-source tool for marking landmarks on spine radiographs and calculating spinopelvic measurements.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Clinicians measuring spinal alignment on radiographs
- Worth noticing
- The browser version measures five listed parameters; Weasis and Horos add thoracic kyphosis, T1PA and SVA.
Field notes
The workflow begins with a standing, lateral full-spine image and guides the user through marking landmarks, including the femoral heads and S1 endplate. The browser build covers PI, PT, SS, LL and PI−LL; Weasis and Horos add TK, T1PA and SVA. Weasis reports SVA in millimeters when the image has a scale, while Horos offers manual calibration if it does not. The page says a browser photo stays on the phone.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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