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Not sure if any of you are doing continuous adductor canal blocks for TKA's. It has caught my interest and I am debating running a side to side comparison... 35 in ea. arm. The MAJOR advantage of the adductor canal catheter is that it is presumably entirely sensory... avoiding the biggest draw back of femoral nerve blocks- that being motor block/weakness.
My major issue with this block is that it is done mid thigh and as we know, the femoral nerve divides (sometimes extensively) as you cross the inguinal ligament. Therefore, you may miss important sensory contributions to the knee with the adductor canal blocks.
I would like to encourage any of you doing TKA's on a regular basis to read through this article and post your thoughts.
http://onlinelibrary.wiley.com/doi/10.1111/j.1399-6576.2010.02333.x/full
Again, it's no silver bullet but the lack of s/e of the block and the reduction of narcotic consumption is certainly a plus and something we all want.
My major issue with this block is that it is done mid thigh and as we know, the femoral nerve divides (sometimes extensively) as you cross the inguinal ligament. Therefore, you may miss important sensory contributions to the knee with the adductor canal blocks.
I would like to encourage any of you doing TKA's on a regular basis to read through this article and post your thoughts.
http://onlinelibrary.wiley.com/doi/10.1111/j.1399-6576.2010.02333.x/full
Again, it's no silver bullet but the lack of s/e of the block and the reduction of narcotic consumption is certainly a plus and something we all want.