<p begin="00:00:07.634" end="00:00:09.403" style="s2">- [Voiceover] A linear<br />array transducer with a</p>
<p begin="00:00:09.403" end="00:00:12.522" style="s2">musculoskeletal exam type<br />is used to perform an</p>
<p begin="00:00:12.522" end="00:00:16.027" style="s2">ultrasound examination<br />of the cubital tunnel.</p>
<p begin="00:00:16.027" end="00:00:18.815" style="s2">The patient's elbow is<br />placed in forceful internal</p>
<p begin="00:00:18.815" end="00:00:22.249" style="s2">rotation, with the<br />elbow in full extension.</p>
<p begin="00:00:22.249" end="00:00:25.700" style="s2">The transducer is placed over<br />the posterior medial elbow</p>
<p begin="00:00:25.700" end="00:00:28.441" style="s2">in a transverse fashion,<br />with the orientation marker</p>
<p begin="00:00:28.441" end="00:00:31.262" style="s2">directed towards the patient's right.</p>
<p begin="00:00:31.262" end="00:00:33.481" style="s2">The medial epicondyle of the elbow,</p>
<p begin="00:00:33.481" end="00:00:34.963" style="s2">and the olecranon process,</p>
<p begin="00:00:34.963" end="00:00:37.949" style="s2">are seen in the epicondylar<br />groove as bright,</p>
<p begin="00:00:37.949" end="00:00:40.115" style="s2">hyperechoic structures.</p>
<p begin="00:00:40.115" end="00:00:43.320" style="s2">The ulnar nerve can be<br />seen as a hypoechoic,</p>
<p begin="00:00:43.320" end="00:00:46.500" style="s2">vesiculated structure near<br />the medial epicondyle.</p>
<p begin="00:00:46.500" end="00:00:49.535" style="s2">The triceps tendon appears<br />as a hyperechoic area,</p>
<p begin="00:00:49.535" end="00:00:52.508" style="s2">overlying the olecranon process.</p>
<p begin="00:00:52.508" end="00:00:54.914" style="s2">The transducer should<br />be slowly moved distally</p>
<p begin="00:00:54.914" end="00:00:57.282" style="s2">to evaluate the cubital tunnel.</p>
<p begin="00:00:57.282" end="00:01:00.799" style="s2">The cubital tunnel retinaculum<br />appears as a hyperechoic</p>
<p begin="00:01:00.799" end="00:01:03.508" style="s2">line above the deeper structures.</p>
<p begin="00:01:03.508" end="00:01:06.617" style="s2">The ulnar head of the<br />flexor carpi ulnaris muscle</p>
<p begin="00:01:06.617" end="00:01:08.813" style="s2">can be seen as a hypoechoic structure</p>
<p begin="00:01:08.813" end="00:01:11.094" style="s2">near the olecranon process.</p>
<p begin="00:01:11.094" end="00:01:13.901" style="s2">The humoral head of the<br />flexor carpi ulnaris muscle</p>
<p begin="00:01:13.901" end="00:01:17.350" style="s2">appears similarly on the<br />medial side of the image.</p>
<p begin="00:01:17.350" end="00:01:20.103" style="s2">The ulnar nerve can be<br />seen as a hypoechoic,</p>
<p begin="00:01:20.103" end="00:01:23.603" style="s2">rounded structure between the two muscles.</p>