Document Detail

Thermometry during coblation and radiofrequency ablation of vertebral metastases: a cadaver study.
MedLine Citation:
PMID:  23321979     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To evaluate safety of coblation of simulated lytic metastases in human cadaveric vertebral bodies by measuring heat distribution during thermal tissue ablation and comparing it to radiofrequency ablation (RFA).
MATERIALS AND METHODS: Three devices were compared: a 10 mm single-needle RFA electrode, a 20 mm array RFA electrode and the coblation device. To simulate bone metastases, a spinal tumor model was used stuffing a created lytic cavity with muscle tissue. Measuring of heat distribution was performed during thermal therapy within the vertebral body, in the epidural space and at the ipsilateral neural foramen. Eight vertebral bodies were used for each device.
RESULTS: Temperatures at heat-sensitive neural structures during coblation were significantly lower than using RFA. Maximum temperatures measured at the end of the procedure at the neural foramen: 46.4 °C (± 2.51; RFA 10 mm), 52.2 °C (± 5.62; RFA 20 mm) and 42.5 °C (± 2.88; coblation). Maximum temperatures in the epidural space: 46.8 °C (± 4.7; RFA 10 mm), 49.5 °C (± 6.48; RFA 20 mm) and 42.1 °C (± 2.5; coblation). Maximum temperatures measured within the vertebral body: 50.6 °C (± 10.48; RFA 10 mm), 61.9 °C (± 15.39; RFA 20 mm) and 54.4 °C (± 15.77; coblation).
CONCLUSION: In addition to RFA, the application of coblation is a safe method to ablate vertebral lesions with regards to heat distribution at heat-sensitive neural spots. The measured temperatures did not harbor danger of thermal damage to the spinal cord or the spinal nerves.
Simon F Groetz; Klaus Birnbaum; Carsten Meyer; Holger Strunk; Hans H Schild; Kai E Wilhelm
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Publication Detail:
Type:  Journal Article     Date:  2013-01-16
Journal Detail:
Title:  European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society     Volume:  22     ISSN:  1432-0932     ISO Abbreviation:  Eur Spine J     Publication Date:  2013 Jun 
Date Detail:
Created Date:  2013-06-10     Completed Date:  2014-01-07     Revised Date:  2014-06-03    
Medline Journal Info:
Nlm Unique ID:  9301980     Medline TA:  Eur Spine J     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1389-93     Citation Subset:  IM    
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MeSH Terms
Catheter Ablation / instrumentation*,  methods*
Hot Temperature
Spinal Neoplasms / secondary,  surgery*
Thermometry / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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