Comparison

AcetabularIndex vs Orthopedic Angles Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AcetabularIndex

This medical software assists orthopedic surgeons in evaluating hip dysplasia by measuring the acetabular index from X-rays. It simplifies angle measurement, compares results to normal reference values based on patient age, sex, and side, and categorizes hip dysplasia.

Highlights
  • 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
Features
Read full description

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

About

Orthopedic Angles Calculator

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Orthopedic Angles Calculator is a specialized application designed for orthopedic surgeons, radiologists, and medical specialists who need to perform accurate measurements on radiographic images. This professional tool enables precise calculation of crucial anatomical angles that guide diagnosis, surgical planning, and assessment of orthopedic conditions. Features: Multiple Angle Calculators: Includes specialized tools for measuring: Femoral Neck-Shaft Angle Glenoid Version Posterior Tibial Slope Talar Declination Angle Baumann Angle Calcaneal Inclination Cobb Angle (for scoliosis) Dens Tilt Angle Radial Inclination Palmar Tilt User-Friendly Interface: Simple point-and-click or touch interface to mark key anatomical landmarks. Immediate Results: Automatic calculation and interpretation of measurements with normal range indicators. Educational Content: Each calculator includes detailed explanations about the clinical significance of the measurements. Import Images: Upload radiographs directly from your device. Example Images: Practice with included example images to learn proper measurement techniques. Offline Functionality: No internet connection required after installation. Clinical Applications: Pre-surgical planning Post-operative assessment Fracture evaluation Deformity analysis Educational demonstrations This application is intended for educational and professional use by qualified healthcare providers. Measurements should be verified according to clinical standards before making treatment decisions. IMPORTANT NOTICE: This app is designed for use by medical professionals only and is not intended for self-diagnosis or treatment by patients. Download Orthopedic Angles Calculator today to enhance your orthopedic assessment workflow with precise, consistent angle measurements.

Screenshots

AcetabularIndex4 screens
Orthopedic Angles Calculator4 screens

Verdict

The call

The clearest difference is price: AcetabularIndex at $2.99 against Orthopedic Angles Calculator's $9.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

AcetabularIndex costs $2.99 and Orthopedic Angles Calculator $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AcetabularIndex ships an update every 11 months, Orthopedic Angles Calculator every 13 months. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 8 level
AcetabularIndex versus Orthopedic Angles Calculator: the parameters behind the verdict, then further details
ParameterAcetabularIndexOrthopedic Angles Calculator
Price$2.99 — better$9.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 11 months — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, MaciPhone, iPad, iPod, Mac
Requires iOS15.414.0 — better
Further details — not scored
Size1 MB4 MB
Age rating17+12+
DeveloperORTHOPRACTIS.COM SINGLE MEMBER P.C.Ahmad Al Hariri

In-app purchases

None

AcetabularIndex

No in-app purchases

None

Orthopedic Angles Calculator

No in-app purchases

Questions

Is AcetabularIndex free?
AcetabularIndex costs $2.99, with no in-app purchases.
Is Orthopedic Angles Calculator free?
Orthopedic Angles Calculator costs $9.99, with no in-app purchases.
Do AcetabularIndex or Orthopedic Angles Calculator have ads?
Neither AcetabularIndex nor Orthopedic Angles Calculator shows ads.
Which is updated more often, AcetabularIndex or Orthopedic Angles Calculator?
AcetabularIndex ships an update every 11 months, and Orthopedic Angles Calculator every 13 months. Most recently, AcetabularIndex was updated on November 8, 2026 and Orthopedic Angles Calculator on November 6, 2026.

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