Laboratory Studies
- No laboratory studies are necessary for the diagnosis of biceps tendinopathy.
Imaging Studies
- In patients with biceps tendinopathy, plain radiography may show calcifications in the biceps tendon or demonstrate associated degeneration in the glenohumeral or acromioclavicular joint. Fisk views help to evaluate the size of the biceps groove. Short, narrow margins of the groove may predispose the patient to biceps tendon subluxations.[10]
- Ultrasonography can be used to assess the dynamic function of the biceps tendon. It is also useful for diagnosing biceps ruptures or instability.[11, 12, 13]
- Magnetic resonance imaging (MRI) is performed to rule out shoulder pathology (eg, rotator cuff tear, labral tears, biceps rupture). MRI may show signal changes in the biceps tendon that indicate pathology.[8]
Other Tests
- Diagnostic local anesthetic infiltration of the region of the bicipital groove may help to clarify the source of the nociception. If an alternate diagnosis is suggested, other tests can be performed.
- Electromyography (EMG) or nerve conduction studies (NCSs) are performed to rule out mononeuropathy, brachial plexopathy, and cervical radiculopathy.
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