J Emerg Med
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Randomized Controlled Trial Multicenter Study Comparative Study
Comparison of ultrasound-guided and standard landmark techniques for knee arthrocentesis.
Ultrasound is a useful adjunct to many Emergency Department (ED) procedures. Arthrocentesis is typically performed using a landmark technique but ultrasound may provide an opportunity to improve arthrocentesis performance. ⋯ US-guided knee arthrocentesis technique does not improve overall success of obtaining joint fluid aspirate vs. the standard LM and palpation technique. An US-guided approach does not result in more pain for the patient, takes no additional time to perform and, at least for novice physicians, leads to more fluid aspiration and greater novice provider confidence with the procedure. Further studies with more participants and standardization of anesthetic quantity are required to validate these findings.