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Fig. 1 | BMC Anesthesiology

Fig. 1

From: Continuous block at the proximal end of the adductor canal provides better analgesia compared to that at the middle of the canal after total knee arthroplasty: a randomized, double-blind, controlled trial

Fig. 1

Ultrasound-guided proximal end adductor canal block (ACB) (A/a) and middle ACB (B/b) techniques. (A) Ultrasound probe position of short-axis scanning at the proximal end of the AC and needle orientation for proximal end ACB. (a) Short-axis ultrasound scan image at the proximal end of the AC. (B) Ultrasound probe position of long-axis scanning with the cranial end of the probe aligned with the proximal end of the AC and needle orientation for middle ACB. (b) Long-axis ultrasound scan image with the cranial end of the probe aligned with the proximal end of the AC (at the cranial side in the image). The purple arrow indicates the skin mark of the puncture point for proximal end ACB; the purple dotted line indicates the skin mark of the proximal end of the AC; the red asterisk indicates the endpoint target for the needle tip; the yellow asterisk indicates the alignment of the medial borders of the SM and ALM. ALM, adductor longus muscle; AMM, adductor magnus muscle; FA, femoral artery; FV, femoral venous; SM, sartorius muscle

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BMC Anesthesiology

ISSN: 1471-2253

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