The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From AAOS (American Academy of Orthopaedic Surgeons):
This app, by the American Academy of Orthopaedic Surgeons, presents the techniques for physical examination of the shoulder. The app presents video demonstrations for Inspection & Palpation (5), Muscle Testing (8), Range of Motion (4), and Special Test (12). The Program is ideal for medical students and residents. Each technique demonstration is preceded by a peer reviewed explanation of the procedure including possible diagnoses, procedural steps, positive test characteristics including statistical values for some tests, and other information, including references.