# What's the Skeletal Maturity? — Skeletal Maturity Calculator

> Evidence-based skeletal maturity calculator for pediatric orthopaedic radiographs. (iPhone/iPad app by Raymond Liu.)

- Source: https://appshunter.io/ios/app/whats-the-skeletal-maturity/id1564285837 (this page in markdown: same URL + `.md`)
- Developer: [Raymond Liu](https://appshunter.io/developer/1564285839)
- Category: Medical, Education
- Price: Free
- Rating: 5.00/5 from 10 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 95 MB
- Languages: English
- Released: 2021-04-23
- Data updated: 2026-06-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/whats-the-skeletal-maturity/id1564285837/reviews.md

## What is What's the Skeletal Maturity??

This is an evidence-based tool that allows clinicians to estimate skeletal age of pediatric patients rapidly and accurately using any orthopaedic radiograph.
 
Skeletal maturity systems supported:

Proximal Humerus Ossification System (Shoulder)
Olecranon Apophyseal Ossification System (Elbow)
Sanders Hand System (Hand)
Pre-adolescent Fels Wrist System (Wrist)
Modified Fels Wrist System (Wrist)
Optimized Oxford Hip Skeletal Maturity System (Hip)
Pre-Adolescent Fels Knee System (Knee)
Modified Fels Knee Skeletal Maturity System (Knee)
Abbreviated Fels Knee System (Knee)
Calcaneal Apophysis Ossification Staging System (Heel)

## Key features

- Estimates skeletal age of pediatric patients
- Uses evidence-based ossification systems
- Supports multiple joint systems (shoulder, elbow, hand, wrist, hip, knee, heel)
- Rapid and accurate estimations
- Utilizes orthopaedic radiographs


## Frequently asked questions about What's the Skeletal Maturity?

### What is Skeletal Maturity?

Skeletal Maturity is a tool that helps clinicians estimate the skeletal age of pediatric patients by analyzing orthopaedic radiographs. It uses various evidence-based ossification systems to provide rapid and accurate assessments.

### What skeletal maturity systems does Skeletal Maturity support?

Skeletal Maturity supports numerous systems including the Proximal Humerus Ossification System (Shoulder), Olecranon Apophyseal Ossification System (Elbow), Sanders Hand System (Hand), and various Fels and Oxford systems for the wrist, hip, and knee, as well as the Calcaneal Apophysis Ossification Staging System (Heel).

### Is Skeletal Maturity free to use?

Yes, Skeletal Maturity is completely free to use. It does not require any payment or subscription to access its features.

### What devices is Skeletal Maturity available on?

Skeletal Maturity is available for iPhone and iPod devices. It is designed for iOS users.

### How often is Skeletal Maturity updated?

The latest version, 1.9, was released on November 1, 2024. Updates are provided periodically to ensure the tool remains accurate and functional.

### What is the age rating for Skeletal Maturity?

Skeletal Maturity has an age rating of 4+. This indicates it is suitable for users aged 4 and above.

### Does Skeletal Maturity have ads?

No, Skeletal Maturity is ad-free. Users can utilize the application without any advertisements interrupting their workflow.

### What is the user sentiment for Skeletal Maturity based on ratings?

Skeletal Maturity has received excellent user feedback, holding a perfect 5.0-star rating from 10 reviews. This suggests a high level of user satisfaction with its functionality and accuracy.

## Version history (last 5 releases)

### 1.9 — 2024-11-01

Modifications to Pre-Existing Systems:
- added modern validation sections that can be found under the information tab for each section

New Content:
- newly added Lateral Elbow maturity system 
- newly added "home" button functionality in deeper parts of the app

### 1.8 — 2022-05-19

A bug that caused the app to crash when looking at more hand examples was fixed

### 1.7 — 2022-03-07

Multiple new skeletal maturity systems were added and display photos were updated accordingly

### 1.6 — 2022-03-05

Multiple new skeletal support systems added

### 1.5 — 2022-02-02

Additional skeletal maturity systems have been added to the app

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## Related topics

[skeletal age](https://appshunter.io/ios/topics/skeletal-age) · [هيا هبوا ثم لبوا](https://appshunter.io/ios/topics/)

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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 2026-06-06.*