# Bone Ninja

> Digital tool for orthopedic surgeons to learn bone deformity analysis and correction. (iPhone/iPad app by LifeBridge Health.)

- Source: https://appshunter.io/ios/app/bone-ninja/id554151432 (this page in markdown: same URL + `.md`)
- Developer: [LifeBridge Health](https://appshunter.io/developer/460335164)
- Category: Medical, Education
- Price: $49.99
- Rating: 4.70/5 from 3 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 34 MB
- Languages: American English
- Released: 2012-08-31
- Data updated: 2026-06-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/bone-ninja/id554151432/reviews.md

## What is Bone Ninja?

Bone Ninja is a teaching tool developed by two orthopedic surgeons who specialize in limb deformity correction: Dr. Shawn Standard and Dr. John Herzenberg. It is designed to help surgeons learn to analyze long bone deformities. Bone Ninja comes pre-loaded with radiographs of normal legs and deformed legs. You can analyze the provided cases or upload your own. Once your analysis is complete, you can then use the cut-out tool to try different osteotomy solutions. Suggested solutions for the provided cases are available for comparison.

Bone Ninja includes tools for drawing lines, measuring angles, measuring lengths, and calibrating the magnification. The cutting tool allows you to manipulate one or more fragments to simulate correction of single or multilevel deformities. The analysis of the radiographs is based on methodology taught at our annual Baltimore Limb Deformity Course (BLDC), now in its 22nd year (DeformityCourse.com). We developed this app to supplement the BLDC and look forward to feedback from attendees and other users. Bone Ninja is not presented as a clinical tool, but rather an educational tool. It will not “automatically” analyze deformities. The student must first learn the methodology of analyzing and planning deformity correction in order to use Bone Ninja. Bone Ninja is a 21st century mobile alternative to pencil, ruler, goniometer, and paper. 

Bone Ninja will be periodically updated by adding more case examples, more explanations, and more tools. The name “Bone Ninja” is intentionally whimsical and reflects our philosophy of teaching as “infotainment.” Enjoy!

Disclaimer
The Bone Ninja App is designed for educational purposes only. The intent is to train physicians how to analyze long bone deformities. The Bone Ninja App is not intended to be used for medical diagnosis or treatment. In view of the possibility of human error or changes in medical science, neither the authors nor the developer warrant that the information contained in this software is accurate or complete and they are not responsible for any errors or omissions or the results obtained from the use of such information.

## Key features

- Radiograph analysis of bone deformities
- Digital measurement and drawing tools
- Osteotomy simulation with cut-out tool
- Upload and analyze personal radiographs
- Comparison with suggested correction solutions
- Educational tool based on established methodology

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/bone-ninja/id554151432/reviews.md

### 4/5 — Not working

*2025-08-03, version 5.0.3*

I am not able to add the X-ray images from the photos or albums. Simply after selecting the add button and go to photos or albums the selected images doesn’t come or appear in the app. Any suggestions or remedies. 
Was working wonderfully for last 6 yrs and it is a great app

### 5/5 — App is not working properly

*2023-10-05, version 5.0.3*

I am using the app for the last few years.it was very good.however App is closing automatically when I try to open the typing pad for writing measurements.I request you to advice on this regard.i have updated the iOS version recently

### 5/5 — Funcional

*2022-04-02, version 5.0.3*

Muy útil, excelente para planear

### 5/5 — Aesome app for Orthopaedic Surgeons

*2017-06-21, version 4.2*

It's a great app for ortopaedic Surgeons for calculating limb deformity calculations and planning pre op. I wish and need if it can be upgraded for iphone and mac so ican use where ever I need even in OR. kindly upgrade it.

### 4/5 — Nice work

*2016-08-27*

Great to have an app that simulates real work planing .. You can cut , rotate , mark and make lines and angles .. It is very good for proper planning .. I hope to have a land scape view .. 
And I hope they keep on developing , not like other apps that became like ghost apps .

### 5/5 — Bone Ninja

*2015-02-21*

Super cool app that allows me to plan bone deformity surgeries based on Pre-op x-Rays. Easy to use, and great for educating my patients on what to expect.

### 3/5 — Problem keeping app open

*2013-09-29*

Great app but since I updated to iOS 7, the app keeps shutting down. It tends to consistently happen when I use the divided line tool. Please fix this, because I love using this app to help prepare for cases.

### 5/5 — Great program

*2012-12-03, version 1.0*

I hope a lot of people know it and start to use it.
Congratulations to Baltimore team

### 5/5 — A Must Have

*2012-09-20*

This app is a must have for limb lengthening and deformity surgeons as well as other orthopedic surgeons and residents who want to correctly implement the principles of limb deformity correction.  It is an excellent tool for patient education as well as teaching residents.  The utility of this app is expanding with use.  It is a great tool for preparing presentations and it's versatility allows you to not only use it for radiographic analysis but also for clinical photos.  Although the price is a bit more than most apps, it is still a lot less than most textbooks and our ortho residents at Loma Linda University are now becoming even more excited about limb lengthening and deformity correction with the use of this app.

### 5/5 — Software Rating. (Excellent)

*2012-09-07*

Purchased the App @ the Baltimore Limb Deformity Course. Excellent thus far. Designed to be a teaching / learning tool. Find new applications and capabilities for the app daily. Very quickly becoming a powerful 'hands-on' application for my residents @ WAMC. Look forward to future upgrades. Well worth the purchase! (AR)

## Frequently asked questions about Bone Ninja

### What is Bone Ninja used for?

Bone Ninja is an educational tool designed to help orthopedic surgeons learn the methodology of analyzing and planning long bone deformity correction. It is not intended for medical diagnosis or treatment.

### Who developed Bone Ninja?

Bone Ninja was developed by two orthopedic surgeons, Dr. Shawn Standard and Dr. John Herzenberg, who specialize in limb deformity correction.

### What kind of analysis does Bone Ninja provide?

Bone Ninja allows users to analyze provided radiographs of normal and deformed legs, or upload their own. It includes tools for drawing lines, measuring angles and lengths, and calibrating magnification.

### Can I practice correction techniques with Bone Ninja?

Yes, Bone Ninja features a cutting tool that allows you to manipulate bone fragments to simulate the correction of single or multilevel deformities. Suggested solutions for provided cases are also available for comparison.

### Is Bone Ninja a clinical tool?

No, Bone Ninja is strictly an educational tool and is not presented as a clinical tool. It requires the user to learn the analysis and planning methodology before using the app.

### What is the price of Bone Ninja?

Bone Ninja is a paid application, priced at $49.99. It does not have in-app purchases or advertisements.

### On which devices can I use Bone Ninja?

Bone Ninja is currently supported on iPads. It was released on August 31, 2012, and its latest version is 5.0.3, last updated on October 21, 2020.

### How often is Bone Ninja updated?

The developers plan to periodically update Bone Ninja by adding more case examples, explanations, and tools. The last update was on October 21, 2020.

## Version history (last 5 releases)

### 5.0.3 — 2020-10-21

The version number updated.
Updates to the splash screen.
Improvements to the zoom.

### 5.0 — 2020-08-15

Updates to the measurement menu
Updates to the zoom

### 4.3.1 — 2018-08-06

Info screen updates.

### 4.3 — 2018-05-07

Minor text update.

### 4.2 — 2016-01-23

Performance fixes for iOS 9

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## More apps by LifeBridge Health

- [Multiplier](https://appshunter.io/ios/app/multiplier/id460335161)
- [Multiplier HD](https://appshunter.io/ios/app/multiplier-hd/id460343565)
- [LifeBridge Health](https://appshunter.io/ios/app/lifebridge-health/id1611570941)
- [Bone Ninja Sensei](https://appshunter.io/ios/app/bone-ninja-sensei/id6450483301)

All apps by LifeBridge Health: https://appshunter.io/developer/460335164

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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 2026-06-04.*