Ultrasonic device in bone cutting. A histological and scanning electron microscopical study

Area of Science:

• Orthopedic Surgery
• Biomaterials Science
• Surgical Technology

Background:

• Orthopedic procedures often require bone cutting.
• Traditional tools like oscillating saws can cause thermal damage and microfractures.
• Novel cutting technologies aim to improve bone healing and minimize iatrogenic damage.

Purpose of the Study:

• To compare the bone tissue effects of an ultrasonic cutting device versus an oscillating saw.
• To evaluate both immediate and long-term bone responses to each cutting method.
• To assess the histological and ultrastructural differences in osteotomy sites.

Main Methods:

• Histological analysis of bone tissue regeneration.
• Scanning electron microscopy (SEM) of osteotomy surfaces.
• Experimental use of rabbit long bones and scapulas.

Main Results:

• SEM revealed rougher osteotomy surfaces with the ultrasonic saw compared to the oscillating saw.
• No microfractures were observed on the bone surfaces created by the ultrasonic saw.
• Histological examination indicated a slight delay in early bone regeneration following ultrasonic cutting.
• The overall bone regeneration process was similar for both cutting methods in the long term.

Conclusions:

• Ultrasonic cutting devices offer a viable alternative to oscillating saws for bone cutting.
• While surface topography differs, ultrasonic cutting does not appear to compromise overall bone healing.
• Further research may explore optimizing ultrasonic parameters for enhanced early bone regeneration.