# AcetabularIndex — Acetabular angle (AC) > Medical app for orthopedic surgeons to measure and evaluate hip dysplasia using the acetabular index. (iPhone/iPad app by ORTHOPRACTIS.COM SINGLE MEMBER P.C..) - Source: https://appshunter.io/ios/app/acetabularindex/id1292735334 (this page in markdown: same URL + `.md`) - Developer: [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) - Category: Medical, Productivity - Price: $2.99 (on sale, was $3.99) - Rating: 5.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 15.4 · 1 MB - Languages: American English - Released: 2017-10-05 - Data updated: 2026-08-17 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/acetabularindex/id1292735334/reviews.md ## What is AcetabularIndex? The diagnosis of hip dysplasia, the prognosis, the evaluation of different methods of treatment is based mainly on X-rays of the hip joint. One of the most frequently applied anatomic measure for the objective evaluation of hip dysplasia and description in everyday orthopaedic care is the acetabular index. The acetabular index (AI) or Acetabular roof angle or Acetabular angle (AC) is the angle formed from a horizontal line (Hilgenreiner) through right and left triradiate cartilage of the acetabulum of the hip and a line drawn from the corner of the triangular cartilage and the lateral acetabular margin. The AI decrease gradually by increasing the age, and is different between right or left hip and different between boys and girls. The measurement of AI is not valid index for acetabular dysplasia over 8 years of age. Measurements of AI in X-rays is important during the decision-making process for conservative or operative treatment, and follow up particular, in Developmental Dysplasia of the hip, or planning correction-osteotomies. Measuring angles in X-rays in clinical settings it is time consuming. Accessory instruments like protractors, goniometers, well sharped pencils, rulers or even transparent papers must be available in a busy everyday practice. Usually you miss or you never had one or another. Also after measurement you have to compare the data that you measure with the normal reference values according to patient age, side and sex and decide what could be considered normal in an X-ray of the hip and what is considered pathologic. This way is cumbersome and old fashioned. Acetabular index app is medical software aimed for orthopaedic surgeons, providing tools that allow doctors to: -Securely import medical images directly from the camera or stored photos -Offers a very convenient way to determine the most accurate possibly lines in order to measure the angles. By the aid of a circular transparent template, the points of interest (triradiate cartilage and lateral acetabular edge please , not lateral sourcil ) are marked accurately. The automatically formed lines, drawn between points, measure automatically the angles of interest. The results are printed in degrees. By inputting the age, sex and the side of the patient in the App, the measured angle is compared with values from normal reference database (see reference) according to age, site and gender. In case the measured angle is beyond the normal range for that age, side and gender, the hips are categorised as mildly dysplastic or severe dysplastic. -Save the planned images, for later review or consultation. All information received from the software output must be clinically reviewed regarding its plausibility before patient treatment! AI App is indicated for assisting healthcare professionals. Clinical judgment and experience are required to properly use the software. The software is not for primary image interpretation. The app is a handy tool for an orthopaedic surgeon, radiologist, medical student or resident who wants objectively to monitor and determine the severity of dysplasia of the hip. The build-in comparison feature with the normal reference values according to patient age, sex and side may help decide what could be considered normal or dysplastic. The app is not a simple goniometer, is an enhanced product which offers the ability to compare all the input data with medical reference database. The results are printed on the screen and the hips are categorised as normal or mildly dysplastic or severe dysplastic according to the AI angle measured respectively. This feature it is particular useful especially in clinical settings where you need a quick results without losing time in looking for reference data according to age variations in huge textbook.More at www.orthopractis.com- Reference databases 1. Tönnis D. Normal values of the hip joint for the evaluationX-rays in children and adults. Clin Orthop Relat Res 1976; (119):39-47 ## Key features - Import medical images from camera or photos - Accurate angle measurement with a circular template - Automatic angle calculation and display in degrees - Comparison with normal reference database - Categorization of hip dysplasia (mild/severe) - Save images for later review ## Frequently asked questions about AcetabularIndex ### What is AcetabularIndex used for? AcetabularIndex is a medical software designed for orthopedic surgeons to aid in the diagnosis and evaluation of hip dysplasia by measuring the acetabular index from X-ray images. It helps in comparing measurements against normal reference values. ### How does AcetabularIndex measure angles? AcetabularIndex uses a convenient circular transparent template to mark key points on medical images, allowing for accurate determination of lines and automatic measurement of angles. The results are displayed in degrees. ### Can AcetabularIndex compare measurements to normal values? Yes, by inputting the patient's age, sex, and side, AcetabularIndex compares the measured angle with a normal reference database. This comparison helps categorize hips as mildly or severely dysplastic if the angle is outside the normal range. ### What devices does AcetabularIndex support? AcetabularIndex is available for Mac, iPhone, and iPad, allowing healthcare professionals to use it across various Apple devices. ### How often is AcetabularIndex updated? The latest version of AcetabularIndex is 4.5, which was last updated on July 21, 2025. Updates ensure the software remains current with medical standards and features. ### What is the age rating for AcetabularIndex? AcetabularIndex has an age rating of 17+, indicating it is intended for adult medical professionals. This aligns with its use in complex medical diagnoses. ### Does AcetabularIndex have ads? No, AcetabularIndex does not contain advertisements. As a paid medical application, it provides an ad-free experience for users. ### What is the price of AcetabularIndex? AcetabularIndex is available for a one-time purchase price of $2.99. This makes it an accessible tool for orthopedic surgeons. ## Version history (last 5 releases) ### 4.5 — 2025-07-21 minor bugs fixed ### 4.0 — 2022-06-12 updatefor ios14.5, bugs fixed. ### 3.5 — 2019-09-29 update for iOS 13 and optimized for Dark Mode ### 3.0 — 2018-12-06 update for iOS 12.1 and few corrections ### 2.0 — 2018-01-02 -update for x iPhone, better graphics for iPad ## Apps similar to AcetabularIndex | App | Rating | Price | Category | | --- | --- | --- | --- | | [Orthopedic FRCS Vivas Lite](https://appshunter.io/ios/app/orthopedic-frcs-vivas-lite/id6737999881) | — | Free | Medical | | [Orthopedic Quiz MCQs App](https://appshunter.io/ios/app/orthopedic-quiz-mcqs-app/id6444176827) | — | $9.99 | Medical | | [SurgiConnect](https://appshunter.io/ios/app/surgiconnect/id1229110782) | 4.3 (4) | Free | Medical | | [DO Ortho Vision](https://appshunter.io/ios/app/do-ortho-vision/id6477726500) | 5.0 (2) | Free | Medical | | [MEPOS 2024](https://appshunter.io/ios/app/mepos-2024/id6737322155) | — | Free | Medical | | [ICODE Hip US Calculator](https://appshunter.io/ios/app/icode-hip-us-calculator/id6474023418) | — | Free | Medical | ## More apps by ORTHOPRACTIS.COM SINGLE MEMBER P.C. - [NeckShaftAngle App](https://appshunter.io/ios/app/neckshaftangle-app/id1286360878) - [CenterEdgeAngleApp](https://appshunter.io/ios/app/centeredgeangleapp/id1294128204) - [SharpAngleApp](https://appshunter.io/ios/app/sharpangleapp/id1295934301) - [ReimersIndexApp](https://appshunter.io/ios/app/reimersindexapp/id1299545292) - [AcetabularDepthRatioApp](https://appshunter.io/ios/app/acetabulardepthratioapp/id1312655753) All apps by ORTHOPRACTIS.COM SINGLE MEMBER P.C.: https://appshunter.io/developer/1286360877 --- *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 2026-08-17.*