
Carpal tunnel release is a common procedure, and is not infrequently required for patients taking coumadin. The criteria for stopping coumadin in elective surgery are generally agreed upon (1). There are certain circumstances, however, in which it is inappropriate to stop the drug for three days before surgery, and in that group of patients, steps are taken to minimize the chances of postoperative bleeding. The author has published a previous report using CO2 laser assistance for carpal tunnel surgery (2). Unfortunately, this is not a common device, and the use of simple electrosurgical cautery is preferred. The author has devised an effective technique that is safe and efficacious. Xylocaine with adrenaline is used for the anesthesia (3) because it helps with local hemostasis and allows one to more readily identify a vessel of any size or concern. Approximately 0.2 mL is deliberately placed deep to the volar carpal ligament. The skin is incised with a number 15 blade into the subcutaneous tissue. Following this, all dissection is done with an Ellman Surgitron (Ellman International Inc, USA) with a tungsten wire tip, sequentially working down to the volar carpal ligament. I have found that the best visualization for doing this with accuracy and safety is with using the CANICA PalmSpring carpal tunnel retractor. Once the ligament is encountered, it can be incised distally with a number 15 blade because it is quite avascular. A standard grooved director is passed beneath the ligament and run proximally about 2.5 cm. This can be done without any discomfort because of the xylocaine with adrenaline block. The cutting cautery is then used to divide the residual elements of the ligament superficial to the grooved director under complete control and safety, visualizing any potential small vessels that may not be effectively coagulated during the incision (Figure 1). Figure 1) Using the CANICA PalmSpring carpal tunnel retractor to optimize visualization during carpal tunnel release surgery. The grooved director is beneath the volar carpal ligament The author has not had a single episode of bleeding or hematoma formation in eight patients when using this technique, and would recommend it as a reliable and safe procedure which should minimize this likelihood in patients on coumadin.
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