A randomized comparison of long-and short-axis imaging for in-plane ultrasound-guided femoral perineural catheter insertion.


OBJECTIVES Continuous femoral nerve blocks provide effective analgesia after knee arthroplasty, and infusion effects depend on reliable catheter location. Ultrasound-guided perineural catheter insertion using a short-axis in-plane technique has been validated, but the optimal catheter location relative to target nerve and placement orientation remain… (More)