<p begin="00:00:07.306" end="00:00:09.048" style="s2">- [Voiceover] A linear array transducer</p>
<p begin="00:00:09.048" end="00:00:11.915" style="s2">with a musculoskeletal exam<br />type, is used to perform</p>
<p begin="00:00:11.915" end="00:00:14.431" style="s2">an ultrasound examination of the extensor</p>
<p begin="00:00:14.431" end="00:00:16.473" style="s2">tendon of the ankle.</p>
<p begin="00:00:16.473" end="00:00:19.238" style="s2">The patient is placed in a<br />supine position with the knee</p>
<p begin="00:00:19.238" end="00:00:21.811" style="s2">flexed, and the foot on the bed.</p>
<p begin="00:00:21.811" end="00:00:24.280" style="s2">The transducer is placed<br />over the ankle joint,</p>
<p begin="00:00:24.280" end="00:00:27.182" style="s2">in a transverse fashion<br />with the orientation marker</p>
<p begin="00:00:27.182" end="00:00:29.648" style="s2">directed toward the patient's right.</p>
<p begin="00:00:29.648" end="00:00:33.811" style="s2">The talus is seen as a<br />bright, hyperechoic line.</p>
<p begin="00:00:33.811" end="00:00:37.412" style="s2">The three extensor tendons are<br />seen as elliptical, compact,</p>
<p begin="00:00:37.412" end="00:00:40.852" style="s2">fibular structures, anterior to the tibia.</p>
<p begin="00:00:40.852" end="00:00:44.349" style="s2">The anterior tibial tendon is most medial.</p>
<p begin="00:00:44.349" end="00:00:46.911" style="s2">The extensor hallucis longus tendon,</p>
<p begin="00:00:46.911" end="00:00:49.662" style="s2">is next to the tibial tendon.</p>
<p begin="00:00:49.662" end="00:00:52.920" style="s2">The extensor digitorum longus<br />tendon, is the most lateral</p>
<p begin="00:00:52.920" end="00:00:54.860" style="s2">tendon in the group.</p>
<p begin="00:00:54.860" end="00:00:58.379" style="s2">The tendons should be scanned<br />superiorly, and inferiorly,</p>
<p begin="00:00:58.379" end="00:01:02.266" style="s2">to evaluate for tears, or tendinopathy.</p>
<p begin="00:01:02.266" end="00:01:05.642" style="s2">The transducers is centered<br />on the anterior tibial tendon,</p>
<p begin="00:01:05.642" end="00:01:09.070" style="s2">and rotated 90 degrees clockwise.</p>
<p begin="00:01:09.070" end="00:01:12.120" style="s2">The fibular pattern of the<br />tendon is identified anterior</p>
<p begin="00:01:12.120" end="00:01:13.892" style="s2">to the ankle joint.</p>
<p begin="00:01:13.892" end="00:01:16.678" style="s2">The tendon should be scanned<br />medially, and laterally,</p>
<p begin="00:01:16.678" end="00:01:20.275" style="s2">to evaluate for tear, or tendinopathy.</p>
<p begin="00:01:20.275" end="00:01:23.698" style="s2">The transducer is rotated<br />90 degrees counterclockwise,</p>
<p begin="00:01:23.698" end="00:01:27.253" style="s2">and centered on the extensor<br />hallucis longus tendon,</p>
<p begin="00:01:27.253" end="00:01:30.489" style="s2">just posterior to the anterior<br />tibial tendon, that should</p>
<p begin="00:01:30.489" end="00:01:34.379" style="s2">be scanned in a transverse,<br />and longitudinal fashion.</p>
<p begin="00:01:34.379" end="00:01:37.751" style="s2">The transducer is then returned<br />to a transverse orientation,</p>
<p begin="00:01:37.751" end="00:01:41.039" style="s2">to scan the extensor digitorum<br />longus tendon, in a similar</p>
<p begin="00:01:41.039" end="00:01:44.122" style="s2">fashion, to complete the examination.</p>