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.