# SagittalMeter Pro

> Medical app for measuring sagittal balance parameters from X-ray images. (iPhone/iPad app by Jean-Charles LE HUEC.)

- Source: https://appshunter.io/ios/app/sagittalmeter-pro/id964135293 (this page in markdown: same URL + `.md`)
- Developer: [Jean-Charles LE HUEC](https://appshunter.io/developer/1880028964)
- Category: Medical
- Price: $9.99
- Rating: 3.00/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 12+
- Requires: iOS 12.2 · 36 MB
- Released: 2015-02-13
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sagittalmeter-pro/id964135293/reviews.md

## What is SagittalMeter Pro?

SagittalMeter is an educative app to easily measure sagittal balance parameters, by directly placing your phone on the sagittal X-Rays.

The sagittal balance is an imperative factor to take into consideration for all practitioners treating spine problems and particularly for surgeons during the pre-operative phase. The compensatory mechanisms of a sagittal unbalanced spine may prevent a successful surgery outcome. A fundamental understanding of a correct sagittal alignment is strongly recommended in determining the correct use of fusion or non fusion devices. 
SagittalMeter enables you to measure 3 fundamental angles which are essential to analyze sagittal alignment (for pre, per and post-operative phases):
	•	Pelvic incidence (PI)
	•	Pelvic tilt (PT)
	•	Sacral slope (SS)

Values of lumbar lordosis are also important parameters to describe sagittal balance, so with SagittalMeter you can measure both:
	•	L1-S1 lordosis
	•	L4-S1 lordosis

You can do a complete sagittal balance analysis by using advanced mode which extends the previous values with the following measures:
	•	Occipito-C2 angle
	•	Spino-sacral angle (SSA), angle between line from C7/T1 center to S1 plateau center and surface of S1 plateau
	•	C7/T1 slope
	•	C7-C2 angle
	•	Spino-cranial angle (CIA), angle between line from C2 Dens to C7/T1 center and surface of C7/T1 endplate


What does it mean? 

If a patient appears to have sagittal imbalance, this needs to be taken into consideration in the pre-operative planning. Any surgical treatment option should aim at the re-establishment of an ‘economic’ posture, achieved with the restoration of the patient specific sagittal balance. Remembering all theoretical normal values is very important but is definitively not easy and can even be impossible. SagittalMeter gives you the possibility to measure all the parameters in a quick way and gives you the average theoretical normal values for an equivalent asymptomatic healthy patient.


How much correction do I need to restore a good balance in daily practice?

Before any kind of lumbar fusion including the segment L4 to S1 it is mandatory to analyse the spine balance.
If the PT or the lumbar lordosis are not correlated with the value of the PI, an approximation of the amount of correction requested can be evaluated with the FBI technique: C7 translation angle + Femur obliquity angle + PT compensation angle. SagittalMeter enables you to evaluate the FBI index value to get an average correction value.

## Key features

- Measure sagittal balance parameters
- Analyze spine alignment
- Pre-operative planning tool
- Calculate pelvic incidence, tilt, and sacral slope
- Measure lumbar lordosis
- Advanced mode for comprehensive analysis

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/sagittalmeter-pro/id964135293/reviews.md

### 1/5 — Bad error

*2025-05-29*

Apos troca de celular para iphone 16 lro max, o app parou de funcionar

### 1/5 — Crash and burn

*2019-04-11*

Program shuts down as soon as I click on one of the measurement options. There is no way to contact the developer.

**Developer response:** Sorry for the bug. App received an update, you may try this new version.

### 4/5 — Excellente application

*2015-06-15*

Très utile dans mes consultations de médecine physique. Les paramètres lombo pelviens sont rapidement obtenus. Les paramètres "avancés" me semblent moins utile, sauf la gîte T9. Une étoile en moins pour une application française, découlant de travaux français, redigée en anglais...

**Developer response:** Merci pour ce retour élogieux !

## Frequently asked questions about SagittalMeter Pro

### What is SagittalMeter Pro used for?

SagittalMeter Pro is an educational app designed to help medical practitioners measure crucial sagittal balance parameters directly from X-ray images. It assists in analyzing spine alignment for pre-operative planning and evaluating surgical outcomes.

### What specific measurements can SagittalMeter Pro provide?

SagittalMeter Pro allows for the measurement of fundamental angles like Pelvic Incidence (PI), Pelvic Tilt (PT), and Sacral Slope (SS). It also measures lumbar lordosis (L1-S1 and L4-S1) and offers advanced measurements including the Occipito-C2 angle and C7/T1 slope.

### How does SagittalMeter Pro help with surgical planning?

The app aids in pre-operative planning by providing accurate measurements of sagittal balance parameters. Understanding these parameters is crucial for surgeons to determine appropriate treatment options and aim for the restoration of a patient's specific sagittal balance.

### What is the price of SagittalMeter Pro?

SagittalMeter Pro is a paid application, with a price of $9.99. This one-time purchase grants access to all its measurement and analysis features.

### On which devices can SagittalMeter Pro be used?

SagittalMeter Pro is available for iPhone and iPod devices. It is designed to leverage the camera and processing capabilities of these mobile platforms.

### How often is SagittalMeter Pro updated?

The app was last updated on November 4, 2025, with version 2.3.0. This indicates a commitment to ongoing development and feature improvements.

### What is the age rating for SagittalMeter Pro?

SagittalMeter Pro has an age rating of 12+. This suggests that the content and complexity of the app are considered appropriate for users aged 12 and above.

### Does SagittalMeter Pro have ads?

No, SagittalMeter Pro does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused on its medical analysis features.

## Version history (last 5 releases)

### 2.3.0 — 2025-11-04

Migrate to .Net 9.0Fix notifications issues.

### 2.2.563 — 2025-03-03

Migrate from Xamarin to MAUI
Bug fixes

### 2.0.305 — 2019-08-08

- Updated formulae for Lumbar Lordosis and Pelvic Tilt computation
- New protocols: measure Cobb angle, evaluate correction (FBI index), evaluate global balance (ODHA index) 
- Updated bibliography

### 1.0.247 — 2015-05-14

Fix bugs and improve measures accuracy.

### 1.0 — 2015-02-12

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 2026-08-24.*