What is Cozen Test?
Cozen Test is used to indicates lateral epicondylitis of the elbow joint or the “Tennis Elbow”, another names of this test include: “resisted wrist extension test” or “resistive Tennis Elbow test”.
How it’s Performed?
- The patient is seated for the examination. The examiner immobilizes the elbow with one hand while the other hand lies at on the dorsum of the patient’s fist.
- The patient is then requested to dorsiflex the wrist against the resistance of the examiner’s hand.
- Alternatively, the examiner may attempt to press the fist, which the patient holds with the wrist firmly extended, into flexion against the patient’s resistance.
What does a positive Cozen Test mean?
- Cozen Test is positive when there is localized pain in the lateral epicondyle of the humerus or pain in the lateral extensor compartment that suggests epicondylitis.
Sensitivity & Specificity
A study by G Saroja 1 to analyse the accuracy of Provocative tests in lateral epicondylitis (Cozen’s test, Maudsley test and Mills test) found that Cozen’s test has a high sensitivity but no specificity:
- Sensitivity: 84 %
- Specificity: 0 %
- Saroja, G., Aseer P, A. and P M, V. (2014). DIAGNOSTIC ACCURACY OF PROVOCATIVE TESTS IN lateral epicondylitis. International Journal of Physiotherapy and Research, 2(6), pp.815-823. Link
- Clinical Tests for the Musculoskeletal System 3rd Edition.
- Dutton’s Orthopaedic Examination, Evaluation, And Intervention 3rd Edition.
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