American journal of physical medicine & rehabilitation
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Am J Phys Med Rehabil · Jul 2012
Randomized Controlled TrialComparison of two positions of knee arthrocentesis: how to obtain complete drainage.
Many studies have focused on the accuracy rate of intraarticular injection. However, sometimes, even when the needle enters the joint cavity accurately, it can be difficult to obtain a sufficient amount of joint fluid. This problem may be attributable to the position of the knee during arthrocentesis. The purpose of this prospective study was to determine which position, supine or sitting, would yield more joint fluid during knee arthrocentesis. ⋯ In our study, more joint fluid was aspirated from patients in the supine position than from patients in the sitting position.