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Rehabilitation Practice and Science

Translated Title

超音波檢查肩部肱二頭肌腱長頭時探頭位置之研究

Abstract

Musculoskeletal ultrasound has been utilized in rehabilitation medicine for many years. However, the accuracy and speed of the examination are very operator-dependent. It is often difficult for inexperienced operators to locate target structures quickly. We therefore designed this study to determine the best positioning for the transducer to detect the tendon of the long head of the biceps brachii on shoulder ultrasonography.One hundred people (200 shoulders) were recruited, including 33 men and 67 women, with a mean age of 50.8±12.5 years. Patients sat upright with the arm flexed and the forearm supinated. The ultrasound transducer was placed on the anterior aspect of the shoulder, and the examiner manipulated it to show the largest area of the bicipital groove between the greater and lesser tuberosities. Once the largest groove area was identified, the transducer was carefully adjusted so that the surface of the greater and lesser tuberosities were seen on an even horizontal plane. We defined the angle between the long axis of the transducer and the subjects' forearm as the ”best transducer-forearm angle”. By scanning up and down the vertical plane, the tendon of the long head of the biceps was easily identifiable. The average best transducer-forearm angle in this series was 16.2±8.2 degrees for left shoulders and 16.1±8.7 degrees for right shoulders. Among the 200 scanned shoulders, 75% of the transducer-forearm angles were clearly delineated with the shoulder internally rotated 12 to 15 degrees with respect to the transducer angle. For examiners who are beginning to learn shoulder ultrasonography, we recommend placement of the transducer on the anterior shoulder with the arm at 12 to 15 degrees of internal rotation relative to the transducer. They should then scan along the vertical plane to identify the tendon of the long head of the biceps.

Language

Traditional Chinese

First Page

149

Last Page

156

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