# Spinopelvic Calc

> Spinopelvic Calc (iPhone/iPad app by Cristiano Menezes.)

- Source: https://appshunter.io/ios/app/spinopelvic-calc/id6756393588 (this page in markdown: same URL + `.md`)
- Developer: [Cristiano Menezes](https://appshunter.io/developer/1860436752)
- Category: Medical
- Price: $24.99
- Age rating: 12+
- Requires: iOS 26.0 · 5 MB
- Languages: American English
- Released: 2026-04-16
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/spinopelvic-calc/id6756393588/reviews.md

## What is Spinopelvic Calc?

SpinopelvicCalc is an educational tool designed to assist in the visualization and understanding of sagittal spinopelvic alignment through radiographic analysis.

The app allows users to analyze both lumbosacral and full-spine radiographs, facilitating a structured approach to key alignment parameters and morphological patterns. It is intended for educational use, supporting spine surgeons, residents, and trainees in the study of sagittal balance and its components.

Key features
Radiographic Analysis
Evaluate lumbosacral and panoramic (full-spine) radiographs in a simple and intuitive workflow.
Spinopelvic Parameters
Visualize and explore key parameters such as pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), and lumbar lordosis (LL).
Alignment Comparison
Compare current alignment with reference alignment values to better understand sagittal balance relationships.
Lumbar Curve Morphology
Identify the lumbar apex and explore sagittal alignment patterns based on established concepts such as the Roussouly classification.
Step-by-Step Landmark Guidance
Guided point placement to support consistent and reproducible radiographic assessment.

Medical Disclaimer:
This application is intended for use by medical professionals as a decision-support tool. It does not provide medical diagnosis or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this application.


## Version history (last 4 releases)

### 1.2.1 — 2026-08-21

Zoom correction and pan movement; option to export data to the camera roll in a table.

### 1.2 — 2026-08-14

Corrected parameter nomenclature and added calculation formulas under ideal spinopelvic values (Ideal LL, PT, SS, L1PA, L4–S1) for improved reference and transparency.

### 1.1 — 2026-05-13

Enhanced precision for full-spine analysis: This update introduces mandatory C2 body center localization. This improvement allows for more accurate calculation of the C2PA (C2-Pelvic Angle), providing better insights into global sagittal balance.

### 1.0 — 2026-04-17

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*