Figure 031_0498. Knee arthrocentesis. Needle entry: medial approach underneath the mid-point of the patella; lateral approach underneath the upper 1/3 of the patella. Illustration courtesy of Dr Shannon Zhang. - McMaster Textbook of Internal Medicine

Figure 031_0498.
Knee arthrocentesis. Needle entry: medial approach underneath the mid-point of the patella; lateral approach underneath the upper 1/3 of the patella. Illustration courtesy of Dr Shannon Zhang.

Figure 031_0498. Knee arthrocentesis. Needle entry: medial approach underneath the mid-point of the patella; lateral approach underneath the upper 1/3 of the patella. Illustration courtesy of Dr Shannon Zhang.