# OsteoMaster — Master of Osteotomy

> Preoperative planning tool for high tibial and distal femoral osteotomy. (iPhone/iPad app by Chu An Luo.)

- Source: https://appshunter.io/ios/app/osteomaster/id1257642395 (this page in markdown: same URL + `.md`)
- Developer: [Chu An Luo](https://appshunter.io/developer/1257642394)
- Category: Medical, Utilities
- Price: $24.99
- Age rating: 4+
- Requires: iOS 8.0 · 24 MB
- Languages: American English
- Released: 2017-07-13
- Data updated: 2026-09-06
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/osteomaster/id1257642395/reviews.md

## What is OsteoMaster?

Handheld preoperative planning tool for high tibial osteotomy (HTO) and distal femoral osteotomy (DFO). 

Features:
1. Measuring the anatomic or mechanical angles of bone, just input the image via camera or your photo library.

2. Calculating preoperative weight-bearing line (WBL) and planning target WBL.

3. Automatically calculating the correction angle, wedge height, sawing depth and leg length change for osteotomy.

4. Set expected WBL, correction angle, wedge height, MPTA or LDFA for planning

5. Planning with open or close wedge, medial or lateral cut

6. Simulating the correction results.

User's guide: https://goo.gl/ASXFeX
Demo video: https://youtu.be/gqgHerWtBr4

## Key features

- Measure bone angles
- Calculate preoperative weight-bearing line
- Automate correction calculations
- Plan with wedge or cut options
- Simulate correction results

## Recent user reviews (10 of 17)

All indexed reviews: https://appshunter.io/ios/app/osteomaster/id1257642395/reviews.md

### 1/5 — Looks like a fraud

*2026-05-04*

I purchased this app today 5/5/26.
Its not able to load scannogram images. Gets shut down. 
I would suggest Don’t buy.

### 1/5 — Please rectify

*2025-11-23*

Images are not loading. The app shuts down if you try to upload an image

### 1/5 — Not uploading image

*2025-06-23*

Please update software

### 1/5 — Image upload failure

*2025-04-24*

Images cannot be uploaded on the app downloaded for ios

### 1/5 — Fraud

*2025-01-23*

Doesn’t work.the X-rays can’t be uploaded

### 1/5 — Useless

*2024-12-29*

Stopped working

### 1/5 — Stopped loading gallery images after software update

*2024-04-28*

Images don’t upload after updating IOS software. It’s a paid software with no support.

### 1/5 — Not working with new IOS update

*2024-04-08*

It was working pretty fine until last IOS update . since then it’s not working. No support

### 1/5 — Not getting resolved

*2024-03-30*

Not able to upload photos,why?
Kindly revert back pls 
No response 
Trying 
Not at all getting resolved

### 1/5 — No support from developers

*2024-01-05*

Was working fine till the new update of ios. Now it won’t allow any new picture to be uploaded. It’s not a free app, people have paid a hefty amount for it.

## Frequently asked questions about OsteoMaster

### What is OsteoMaster used for?

OsteoMaster is a handheld preoperative planning tool specifically designed for high tibial osteotomy (HTO) and distal femoral osteotomy (DFO) procedures. It helps surgeons measure bone angles, calculate weight-bearing lines, and simulate correction results.

### How does OsteoMaster help with planning bone surgery?

OsteoMaster automates the calculation of crucial preoperative data such as correction angle, wedge height, sawing depth, and leg length change. It allows for planning with different wedge or cut options and simulates the final correction results.

### What kind of images can OsteoMaster use for planning?

You can input images into OsteoMaster either directly via the device's camera or by selecting photos from your photo library. This flexibility allows for easy integration into your existing workflow.

### What devices does OsteoMaster support?

OsteoMaster is available for iPhone and iPod devices. It is designed to be a portable and accessible tool for medical professionals on the go.

### How much does OsteoMaster cost?

OsteoMaster is a paid application, priced at $24.99. This one-time purchase provides access to all its preoperative planning features.

### Does OsteoMaster have ads?

No, OsteoMaster does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused solely on surgical planning.

### When was OsteoMaster last updated?

The latest version of OsteoMaster, 2.1.2, was last updated on September 23, 2017. The app was initially released on July 13, 2017.

### What is the age rating for OsteoMaster?

OsteoMaster has an age rating of 4+. This indicates it is suitable for a wide audience, though its primary users are medical professionals.

## Version history (last 5 releases)

### 2.1.2 — 2017-09-23

This update from Apple will improve the functionality of this app. No new features are included.

- fix bugs

### 2.1.1 — 2017-09-20

- Planning for lateral open wedge HTO
- fix bugs

### 2.0.1 — 2017-09-12

- fix bugs

### 2.0.0 — 2017-09-06

- Set body center after importing an image
- fix bugs

### 1.4.3 — 2017-08-24

- red texts alert for abnormal MPTA or LDFA
- fix bugs

## Apps similar to OsteoMaster

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [MSKC](https://appshunter.io/ios/app/mskc/id6760404010) | — | Free | Medical |
| [eMedHub Doc - For Doctors](https://appshunter.io/ios/app/emedhub-doc-for-doctors/id1479029674) | 5.0 (1) | Free | Medical |
| [Ortho AI - AIMD](https://appshunter.io/ios/app/ortho-ai-aimd/id6756233109) | — | Free | Medical |
| [SitaRam MobiHISTree](https://appshunter.io/ios/app/sitaram-mobihistree/id6746413097) | — | Free | Medical |
| [OsteoPlan](https://appshunter.io/ios/app/osteoplan/id6758571441) | — | Free | Medical |
| [Global Knee Summit](https://appshunter.io/ios/app/global-knee-summit/id6755230438) | — | Free | Medical |

## More apps by Chu An Luo

- [OsteoGauge - lower limb](https://appshunter.io/ios/app/osteogauge-lower-limb/id1312951940)
- [OP Calc](https://appshunter.io/ios/app/op-calc/id6790341961)

All apps by Chu An Luo: https://appshunter.io/developer/1257642394

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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 2026-09-06.*