PMID: 15241311Jul 9, 2004Paper

Thermal profile of radiofrequency energy in the inferior glenohumeral ligament

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
Wei-Lee LiaoC Thomas Vangsness

Abstract

Currently, two different methods of applying radiofrequency (RF) energy (monopolar and bipolar) are available to the surgeon for thermal shortening of the shoulder capsule. The objective of this study was to investigate the temperature changes and the thermal conduction across the human inferior glenohumeral ligament (IGHL) during radiofrequency energy application. Thermistors were secured onto both the intra-articular and extra-articular surfaces of human IGHL. Monopolar RF energy and bipolar RF energy were delivered to the intra-articular surface at the manufacturer's recommended settings. Pre-treatment and post-treatment ligament lengths, widths, heating times, and temperatures were measured and compared. For the monopolar devices, temperature spikes to 89 degrees C were recorded for the set temperature of 67 degrees C, averaging 77 degrees C +/- 10 degrees C. Temperatures across the ligament averaged 48 degrees C +/- 3 degrees C. For both devices, the IGHL became thicker with higher RF settings. Recorded temperatures decreased as distance increased from the point of application. Maximum temperatures occurred at least 6 to 7 seconds after cessation of energy application. The bipolar and monopolar devices had similar conducti...Continue Reading

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Citations

Jul 4, 2012·HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery·Alison P TothStephen J O'Brien
Nov 17, 2009·The Journal of Hand Surgery·Dean G SotereanosMark Carl Miller
Sep 12, 2006·Journal of Shoulder and Elbow Surgery·Jonathan B TickerLouis U Bigliani
Sep 17, 2005·The Orthopedic Clinics of North America·C Thomas Vangsness
May 11, 2006·The American Journal of Sports Medicine·Anthony Miniaci, Michael J Codsi
May 13, 2005·The American Journal of Sports Medicine·Sean CaffeyC Thomas Vangsness

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