<p begin="00:00:07.374" end="00:00:09.089" style="s2">- [Voiceover] A linear array transducer</p>
<p begin="00:00:09.089" end="00:00:12.017" style="s2">with a musculoskeletal exam<br />type is used to perform</p>
<p begin="00:00:12.017" end="00:00:14.388" style="s2">an ultrasound examination of the Lateral</p>
<p begin="00:00:14.388" end="00:00:16.672" style="s2">Collateral Ligament of the Knee.</p>
<p begin="00:00:16.672" end="00:00:18.568" style="s2">The patient is in a supine position</p>
<p begin="00:00:18.568" end="00:00:21.341" style="s2">with the knee flexed 90 degrees.</p>
<p begin="00:00:21.341" end="00:00:23.742" style="s2">The transducer is placed longitudinally</p>
<p begin="00:00:23.742" end="00:00:25.916" style="s2">over the outer knee at the joint space</p>
<p begin="00:00:25.916" end="00:00:27.753" style="s2">with the orientation marker directed</p>
<p begin="00:00:27.753" end="00:00:29.563" style="s2">to the patient's head.</p>
<p begin="00:00:29.563" end="00:00:32.682" style="s2">The fibular head is a<br />bright, hyperechoic structure</p>
<p begin="00:00:32.682" end="00:00:35.641" style="s2">where the biceps femoris muscle attaches.</p>
<p begin="00:00:35.641" end="00:00:37.553" style="s2">The transducer should be translated</p>
<p begin="00:00:37.553" end="00:00:39.726" style="s2">in a windshield wiper type maneuver</p>
<p begin="00:00:39.726" end="00:00:42.375" style="s2">to connect the fibula<br />and the femoral condyle</p>
<p begin="00:00:42.375" end="00:00:45.671" style="s2">to identify the Lateral<br />Collateral Ligament.</p>
<p begin="00:00:45.671" end="00:00:47.588" style="s2">The ligament can be seen as a packed,</p>
<p begin="00:00:47.588" end="00:00:50.143" style="s2">fibular patterned, tight,<br />elliptical structure</p>
<p begin="00:00:50.143" end="00:00:52.167" style="s2">arising from the lateral condyle,</p>
<p begin="00:00:52.167" end="00:00:54.630" style="s2">and inserting on the fibular head.</p>
<p begin="00:00:54.630" end="00:00:57.277" style="s2">The transducer is then rotated 90 degrees</p>
<p begin="00:00:57.277" end="00:01:00.799" style="s2">counterclockwise to<br />obtain a short-axis view.</p>
<p begin="00:01:00.799" end="00:01:02.914" style="s2">The Lateral Collateral Ligament appears</p>
<p begin="00:01:02.914" end="00:01:05.520" style="s2">as a sheet-like structure,<br />which should be scanned</p>
<p begin="00:01:05.520" end="00:01:07.742" style="s2">from its proximal to distal insertion</p>
<p begin="00:01:07.742" end="00:01:10.159" style="s2">to complete the examination.</p>