Ultrasonography (US) is an efficient alternative to magnetic resonance (MR) imaging for evaluation of soft tissues of the elbow. US is able to diagnose several abnormalities affecting tendons, muscles, ligaments and bursae around the elbow joint. In cubital tunnel syndrome, US identifies ulnar nerve abnormalities and extrinsic lesions that may cause nerve entrapment. Occult fractures, osteophytes and intra-articular loose bodies can also be imaged. In para-articular swelling, US is able to assess the presence of capsular and synovial processes and to differentiate them from soft tissue tumors. Key advantages of this technique include cost-effectiveness, availability and ability to perform a dynamic examination.
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