PTNarrative ReviewInternational journal of sports physical therapy2025

Diagnostic Musculoskeletal Ultrasound in the Evaluation of the Brachialis.

Robert C Manske, Chris Wolfe, Phil Page and 1 others

PMID 40756795

WHAT IT FOUND

This paper describes how to scan the brachialis muscle with ultrasound.

It details probe placement, normal appearance, and dynamic testing but reports no patient outcomes, diagnostic accuracy, or treatment results.

Key findings

01The brachialis is assessed using a linear high-frequency transducer placed transversely over the distal anterior upper arm, with specific short-axis and long-axis views described to distinguish it from the biceps.

02Dynamic visualization can be performed with resisted elbow flexion and forearm pronation and supination to aid assessment.

STILL TO COME

How it was doneWhat they foundWhat it means for PTs

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What it does not show

No patients were studied, so there is no evidence of diagnostic accuracy or clinical benefit. The text is a description of technique rather than a validation of that technique. It acknowledges that the expertise required for optimal imaging limits its immediate adoption.

The easy way to misread this

Do not interpret the described ultrasound protocol as evidence that scanning the brachialis improves patient outcomes or diagnosis accuracy. The paper reports no data on patients scanned or outcomes achieved.

Read it on PubMed →