<p begin="00:00:07.188" end="00:00:08.845" style="s2">- [Voiceover] A linear array transducer</p>
<p begin="00:00:08.845" end="00:00:11.064" style="s2">with a musculoskeletal exam type</p>
<p begin="00:00:11.064" end="00:00:13.476" style="s2">is used to perform an<br />ultrasound examination</p>
<p begin="00:00:13.476" end="00:00:15.738" style="s2">of the infrapatellar tendon.</p>
<p begin="00:00:15.738" end="00:00:17.577" style="s2">The patient is in a supine position</p>
<p begin="00:00:17.577" end="00:00:20.176" style="s2">with the knee flexed 90 degrees.</p>
<p begin="00:00:20.176" end="00:00:22.815" style="s2">The transducer is placed longitudinally</p>
<p begin="00:00:22.815" end="00:00:25.613" style="s2">just inferior to the<br />patella in the mid-line</p>
<p begin="00:00:25.613" end="00:00:26.858" style="s2">with the orientation marker</p>
<p begin="00:00:26.858" end="00:00:29.102" style="s2">directed to the patient's head.</p>
<p begin="00:00:29.102" end="00:00:31.030" style="s2">The bright hyperechoic patella</p>
<p begin="00:00:31.030" end="00:00:33.007" style="s2">is seen on the left of the image.</p>
<p begin="00:00:33.007" end="00:00:34.572" style="s2">The infrapatellar tendon</p>
<p begin="00:00:34.572" end="00:00:38.046" style="s2">is seen as a compact<br />fibrillar pattern structure</p>
<p begin="00:00:38.046" end="00:00:40.679" style="s2">which extends from the<br />patellar insertion distally</p>
<p begin="00:00:40.679" end="00:00:43.517" style="s2">to the anterior tibial tuberosity.</p>
<p begin="00:00:43.517" end="00:00:45.316" style="s2">The long axis examination</p>
<p begin="00:00:45.316" end="00:00:47.519" style="s2">is repeated medially and laterally</p>
<p begin="00:00:47.519" end="00:00:49.785" style="s2">to fully evaluate the tendon.</p>
<p begin="00:00:49.785" end="00:00:53.546" style="s2">The transducer is then rotated<br />90 degrees counter clockwise</p>
<p begin="00:00:53.546" end="00:00:55.964" style="s2">to obtain a short axis view.</p>
<p begin="00:00:55.964" end="00:00:59.087" style="s2">The infrapatellar tendon is<br />seen as a speckled pattern,</p>
<p begin="00:00:59.087" end="00:01:01.662" style="s2">elliptical structure distal to the patella</p>
<p begin="00:01:01.662" end="00:01:03.829" style="s2">and anterior to the tibia.</p>
<p begin="00:01:04.822" end="00:01:07.231" style="s2">The transducer is slowly moved distally</p>
<p begin="00:01:07.231" end="00:01:08.992" style="s2">as the tendon gradually thins</p>
<p begin="00:01:08.992" end="00:01:11.992" style="s2">to insert on the tibial tuberosity.</p>