Developing the Optimal Osteotome Hand-Sharpening Method.

Area of Science:

• Surgical Instruments
• Materials Science
• Biomedical Engineering

Background:

• Rhinoplasty osteotomes require sharp edges for effective bone cutting.
• Existing sharpening methods include professional services and manual techniques using whetstones or rotary devices.

Purpose of the Study:

• To evaluate and compare the effectiveness of various manual osteotome sharpening methods against professional sharpening.
• To identify an optimal hand-sharpening technique for rhinoplasty osteotomes.

Main Methods:

• Dull osteotomes were sharpened using seven distinct techniques, including whetstone and rotary methods.
• Sharpness was quantitatively assessed using a custom mechanical testing platform on bovine bone.
• Edge morphology was also evaluated to understand sharpness characteristics.

Main Results:

• Two specific whetstone sharpening methods, involving flipping the osteotome after each stroke, produced significantly sharper edges than other manual methods.
• These optimized hand-sharpening techniques (Methods 5 and 6) demonstrated sharpness statistically indistinguishable from professional sharpening (control).

Conclusions:

• A single stroke with successively alternating surfaces on a whetstone is an effective technique for sharpening rhinoplasty osteotomes.
• This manual method achieves sharpness levels comparable to professional sharpening, offering a viable alternative for surgeons.