Does the sound of hooves make you think of a horse or a zebra? Many medical students and physicians-in-training are taught to think of the most common cause or diagnosis (i.e. horses) when compiling diagnostic information as they care for patients.

However, to be a great physician and reach the highest level of care, a physician occasionally has to consider rare conditions and diagnoses (i.e. zebras). The JBJS Image Quiz App is an excellent app for orthopedic and musculoskeletal specialists to test their knowledge of unique conditions.

The app is provided by the Journal of Bone and Joint Surgery (JBJS) Case Connector. JBJS is one of the most trusted and most popular resources in the field of orthopedics. The weekly research publication is enhanced with podcasts, videos, and online content. This Image Quiz app is another great service provided by the journal.

User Interface

The app opens with the Image Quiz Library on the Main menu. The user has a long list of case presentations with an associated image to peak their interest. Cases are updated approximately every two weeks and listed in the order of posting.


Clicking on any case takes the user to a larger image associated with the case. If they are interested in the presented topic, they can click “Start Quiz Now”.


Every case is setup in the same format. There is an Intro, Question, Answer, and Discussion section associated with each case. The section of the case is identified by a tab at the top of the app.


The Intro section is essentially the case presentation. They are very focused presentations with all of the critical information to make the diagnosis. The presentations are thoughtfully presented without giving away the diagnosis. The sections are also enhanced by several high quality images that cross many different imaging modalities: x-ray, MRI, CT, and ultrasound. The images load quickly and are easy to view on a mobile device.

With the necessary information, the user can then advance to the Question tab and make a diagnosis. The diagnosis is presented as a multiple choice option amongst similar conditions. If the choice is incorrect, you have to try again. When the correct diagnosis is made, you can progress to the next tab.


The Answer tab describes the correct diagnosis and frequently presents more imaging studies for review. If the user wants to learn even more information about the topic, they can progress to the Discussion tab. The information is clearly presented and each case is associated with its case report referenced for further information.


Healthcare workers that would benefit from the app

Any healthcare worker, especially orthopedic specialists and musculoskeletal radiologists, who have an interest in unique musculoskeletal diagnosis.

  • Price
    • $0.99
    • Short, to the point, explanations of unique orthopedic cases
    • Great quality images
    • Nice interactive quiz features
    • Diverse case presentations
  • Dislikes
    • Could use a section for more common diagnoses
    • No search function for cases of interest
  • Overall

    This app is designed very well and easy to use. The content is great and presented with high quality images. The price is very reasonable for the information obtained. The app is updated periodically and provides a great resource for musculoskeletal specialists.

  • Overall Score
  • User Interface

    The information is presented in a list format interface that is easy to navigate. With a few clicks, the user can navigate through cases of interest.

  • Multimedia Usage

    The images are good quality but could be enhanced with scrollable studies or videos.

  • Price

    The app has a great price for the amount of information provided.

  • Real World Applicability

    This application focuses on unique cases, but it can still expand the knowledge base for medical professionals.

  • Device Used For Review

    iPhone 5

  • Available for DownloadiPhone