On the kinematics of the cross body abduction and hand behind the back tests to assess osteoarthritis of the acromioclavicular joint

Background: Osteoarthritis of the acromioclavicular joint is one most common sources shoulder pain. One current standard clinical physical examination tests cross body adduction test which has been shown to signal presence osteoarthritis. Another referred as hand behind back described provide a more accurate diagnosis than CBA for some patients. Through this work, both and HBB were modeled in order determine if there merit be used diagnostic tool clinicians. Methods: Both using zygote solid 3D 50th percentile male human anatomy model MSC-ADAMS Software compile run simulations. Within bones outfitted with joints. During simulation, moved from anatomical position final each corresponding minimum distances between at then determined. Results: It was found that distance articulating surfaces decreased by 0.3 mm during 1.65 HBB. This shows space 5 folds test. Conclusions: These results indicate may better due greater stress irritation it places upon joint.