Hook Test

What is the "Hook Test" used for?

• Distal Biceps Avulsion

How to perform the "Hook Test"?

• Performed by asking the patient to actively flex the elbow to 90° and to fully supinate the forearm
• Examiner then uses index finger to hook the lateral edge of the biceps tendon.

What is the positive result?

1. With an intact / partially torn tendon, finger can be inserted 1 cm beneath the tendon.
2. False positive:
   1. Partial tear
   2. Intact lacertus fibrosis
   3. Underlying brachialis tendon

Test Accuracy

• Sensitivity: 100 %
• Specificity: 100 %

References

• Orthofixar | Hook Test
• https://shoulderelbow.org/
• The hook test for distal biceps tendon avulsion. PMID: 17687121.