<p begin="00:00:07.332" end="00:00:09.322" style="s2">- [Voiceover] A linear<br />array transducer with</p>
<p begin="00:00:09.322" end="00:00:11.270" style="s2">a musculoskeletal exam type,</p>
<p begin="00:00:11.270" end="00:00:13.585" style="s2">is used to perform an<br />ultrasound examination</p>
<p begin="00:00:13.585" end="00:00:16.264" style="s2">of the anterior recess of the elbow.</p>
<p begin="00:00:16.264" end="00:00:18.416" style="s2">The patient is placed<br />in a supine position,</p>
<p begin="00:00:18.416" end="00:00:21.463" style="s2">with the elbow extended<br />over the examination table,</p>
<p begin="00:00:21.463" end="00:00:25.302" style="s2">a pillow under the elbow,<br />and the forearm supinated.</p>
<p begin="00:00:25.302" end="00:00:27.760" style="s2">The transducer is placed<br />over the distal humerus</p>
<p begin="00:00:27.760" end="00:00:30.524" style="s2">in a transverse fashion,<br />with the orientation marker</p>
<p begin="00:00:30.524" end="00:00:33.079" style="s2">directed toward the patient's right side.</p>
<p begin="00:00:33.079" end="00:00:35.316" style="s2">The brachialis tendon is seen as</p>
<p begin="00:00:35.316" end="00:00:37.389" style="s2">a hypoechoic fibrillar structure</p>
<p begin="00:00:37.389" end="00:00:40.639" style="s2">extending over the bright<br />hyperechoic curved surface</p>
<p begin="00:00:40.639" end="00:00:42.267" style="s2">of the distal humerus.</p>
<p begin="00:00:42.267" end="00:00:44.178" style="s2">The articular cartilage of the humerus</p>
<p begin="00:00:44.178" end="00:00:46.741" style="s2">can be seen as a thin hypoechoic line</p>
<p begin="00:00:46.741" end="00:00:49.383" style="s2">that extends over the humeral surface.</p>
<p begin="00:00:49.383" end="00:00:51.166" style="s2">The corrinoid fossa is seen as</p>
<p begin="00:00:51.166" end="00:00:54.339" style="s2">a concavity of the anterior<br />surface of the humerus.</p>
<p begin="00:00:54.339" end="00:00:57.260" style="s2">The anterior fat pad<br />fills the corrinoid fossa</p>
<p begin="00:00:57.260" end="00:01:00.066" style="s2">and appears as a hypoechoic structure.</p>
<p begin="00:01:00.066" end="00:01:03.921" style="s2">The transducer is rotated<br />90 degrees counter-clockwise</p>
<p begin="00:01:03.921" end="00:01:05.303" style="s2">with the orientation marker</p>
<p begin="00:01:05.303" end="00:01:07.823" style="s2">directed toward a 9 o'clock position.</p>
<p begin="00:01:07.823" end="00:01:09.569" style="s2">The brachialis muscle is seen as</p>
<p begin="00:01:09.569" end="00:01:11.900" style="s2">a hypoechoic striated structure</p>
<p begin="00:01:11.900" end="00:01:15.272" style="s2">encompassing the hyperechoic<br />brachialis tendon.</p>
<p begin="00:01:15.272" end="00:01:18.203" style="s2">The anterior distal humeral epiphysis</p>
<p begin="00:01:18.203" end="00:01:20.972" style="s2">appears as a bright hyperechoic wavy line</p>
<p begin="00:01:20.972" end="00:01:24.054" style="s2">with a thin overlying articular cartilage.</p>
<p begin="00:01:24.054" end="00:01:26.327" style="s2">The humeral capitellum is seen as</p>
<p begin="00:01:26.327" end="00:01:28.320" style="s2">a rounded structure laterally,</p>
<p begin="00:01:28.320" end="00:01:30.429" style="s2">and the humeral trochlea appears as</p>
<p begin="00:01:30.429" end="00:01:32.929" style="s2">a V-shaped structure medially.</p>