Home | About JCVJS | Editorial board | Ahead of print | Current Issue | Archives | Instructions | Subscribe | Advertise | Contact us |   Login 
Journal of Craniovertebral Junction and Spine
Search Articles   
Advanced search   
Year : 2018  |  Volume : 9  |  Issue : 1  |  Page : 68-72

Comparison of thermal spread with the use of an ultrasonic osteotomy device: Sonopet ultrasonic aspirator versus misonix bonescalpel in spinal surgery

Department of Trauma and Orthopaedics, Galway University Hospital, Galway, Ireland

Correspondence Address:
Dr. Nadim Tarazi
Department of Trauma and Orthopaedics, Galway University Hospital, Galway
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcvjs.JCVJS_16_18

Rights and Permissions

Background: The development of high speed rotating burrs has greatly advanced spinal surgery in recent years. However, they produce unwanted frictional heat and temperature elevation during the burring process. We compare the misonix bone scalpel (MBS) and the Sonopet ultrasonic aspirator to assess which would be the safer device in terms of the risk of thermal injury following laminectomy. Methods: We describe an experimental nonrandomized study comparing two ultrasonic osteotomy devices. We use the device tip temperature and temperature of inner cortex of the lamina, following laminectomy, as the primary outcome. Our secondary outcome is to assess which device is associated with a lower risk of osteonecrosis and potential thermal injury to surrounding dura and nerves. Results: The average device tip temperature for the Sonopet ultrasonic aspirator following the process of laminectomy was 36.8 with a maximum temperature of 41.8°C. The average device tip temperature for the MBS following laminectomy was 48.6 with a maximum temperature of 85.3°C. Conclusion: Our results have demonstrated the safety of the Sonopet ultrasonic aspirator with the Nakagawa serrated knife with temperatures below the threshold for osteonecrosis and thermal neural injury. However, the MBS has shown to occasionally reach high temperatures above the threshold of potential thermal injury to surrounding nerves and dura for a very short period of time. We advise to withdraw and re-insert the ultrasonic tip repeatedly to re-establish adequate cooling and lubrication. Further studies should be carried out using cadaveric bone at body temperature to simulate more accurate results.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded56    
    Comments [Add]    

Recommend this journal