Is there a 0.75 mm dull punch? Or is it possible to use Dr. James Harris’ two step technique with a 0.75 mm tool, so there would be a lot less transected follicles?
Follicular extraction is a very delicate and technically challenging process with its transection risks. As you can imagine, smaller diameter instruments will have more transection rates. It is a balance between technology and technique that will ultimately determine the acceptable transection rate. I have personally developed and used a 0.75mm and even a 0.70mm dull and sharp punch utilizing many techniques (including the two step technique). It is my opinion that the technology has not been perfected to my satisfaction for the entire Follicular Extraction process and damage with the an instrument of this size is generally unacceptable. With the current state of technology, acceptable FUE procedures can be done with a 0.9mm diameter punch.