Background: A prospective study was established to assess the sensitivity and specificity of the new Saccomanni (SAC) test for isolated AC pathology, and compare with 4 commonly used clinical tests.
Materials and methods: The Saccomanni (Sac) test is essentially the cross-adduction test, with the addition of attempted elevation against resistance. In a positive test, this results in some pain and the inability of the patient to maintain the arm in the adducted and elevated position against resistance. Fifty-eight patients with isolated AC joint symptoms were assessed in random order with the Saccomanni test and 4 other tests. A corticosteroid and local anaesthetic injection was administered into the AC joint space. The Saccomanni test and 4 other tests were then repeated following the injection. After the injection, a symptom free clinical examination was used as a measure of true positive tests.
Study design: Case series.
Results: The SAC test showed a sensitivity of 98% and specificity is 91.7%. All 4 other tests were less sensitive.
Conclusion: The SAC test is a highly sensitive test in patients presenting with isolated AC related symptoms. This study is an innovation for clinical tests in the world. The primary aim of this study was to assess the diagnostic sensitivity of my newly described SAC test. From the present study, it can be concluded that the easy-to use SAC is a highly sensitive test to evaluate AC joint pathology, when compared to other standard tests.
Clinical relevance: Level III, Diagnostic Study of Nonconsecutive Patients.
Keywords: AC joint; Acromioclavicular; Arthritis; Saccomanni test; Shoulder.