From a pure sharpness perspective, you can't actually get any sharper, but it turns out there are many other physical properties (toughness, ease of sterilization, repeatability of manufactured tolerances at-scale, etc.) of a practical cutting edge where steel overwhelmingly beats amorphous ceramics.
FWIW, many surgical operations done today that require a very high-precision cut use numerically controlled lasers. Unfortunately, lasers will never work for certain procedures where cauterization would hamper healing or tissue reintegration.
FWIW, many surgical operations done today that require a very high-precision cut use numerically controlled lasers. Unfortunately, lasers will never work for certain procedures where cauterization would hamper healing or tissue reintegration.