Background: The purpose of the study was to evaluate whether use of a bi-polar radiofrequency (RF) ablation wand would cause excess heating, which may lead to collateral damage to the surrounding tissues during arthroscopic subacromial decompression. Cadaveric studies have shown that high temperatures can potentially be reached when using RF ablation wands in arthroscopic shoulder surgery. Only 1 other published study assesses these temperature rises in the clinical setting.
Methods: Fifteen patients were recruited to participate in the study. A standard arthroscopic subacromial decompression was performed using continuous flow irrigation, with intermittent use of the RF ablation wand for soft tissue debridement. The temperature of the irrigation fluid within the subacromial bursa and the outflow fluid from the suction port of the wand were measured during the procedure using fiber-optic thermometers.
Results: The mean peak temperature recorded in the subacromial bursa was 32.0°C (29.3-43.1°C), with a mean rise from baseline of 9.8°C. The mean peak temperature recorded from the outflow fluid from the wand was 71.6°C (65.6-77.6°C), with a mean rise from baseline of 49.4°C.
Conclusion: High temperatures were noted in the outflow fluid from the wand; however, this was not evident in the subacromial bursa itself. Use of room temperature inflow fluid, maintenance of flow through the bursa, and avoidance of prolonged uninterrupted use of the wand all appear to ensure that safe temperatures are maintained in the subacromial bursa not only in the laboratory but also in a clinical setting.
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http://dx.doi.org/10.1016/j.jse.2011.09.024 | DOI Listing |
JBJS Case Connect
October 2024
Department of Orthopaedic Surgery, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan.
Case: An 18-year-old woman presented with shoulder pain that had persisted for a year. The magnetic resonance imaging showed a solitary lesion in the subacromial bursa (SAB). Arthroscopy revealed an ovoid mass connected to the bursal wall with thin synovial tissue that was excised en bloc arthroscopically.
View Article and Find Full Text PDFBiomedicines
November 2024
Department of Physical Medicine and Rehabilitation, Lotung Poh-Ai Hospital, Lo-Hsu Medical Foundation, Inc., Yilan 26546, Taiwan.
: The objective of this study was to investigate the effect of ultrasound-guided corticosteroid injection to the subacromial-subdeltoid bursa (SSB) and coracohumeral ligament (CHL) in treating adhesive capsulitis, with a particular focus on evaluating the potential benefits of regular electrotherapy and conventional rehabilitation exercises. : A total of 29 patients with unilateral shoulder pain and restricted shoulder range of motion (ROM) were included. Corticosteroids were delivered to the subacromial-subdeltoid bursa (SSB) and coracohumeral ligament (CHL) through a single percutaneous injection.
View Article and Find Full Text PDFQuant Imaging Med Surg
December 2024
Department of Ultrasound, Huzhou Central Hospital, Huzhou, China.
Background: There are only a few isolated studies that have examined ultrasound-guided magnetic resonance arthrography (USMRA) of the glenohumeral joint and subacromial bursa with the use of gadolinium contrast agent. This study aimed to determine the clinical value of USMRA in the diagnosis of supraspinatus tendon tears and its subtypes.
Methods: Musculoskeletal ultrasound (MSKUS) was performed in 207 patients with shoulder pain as confirmed by arthroscopic examination, 103 of whom underwent shoulder joint magnetic resonance imaging (MRI), and 104 of whom underwent USMRA.
Objective The purpose of this study was to establish the efficacy of ultrasound (US)-guided hydrodilatation of the glenohumeral joint, in conjunction with corticosteroid injection, in alleviating pain and improving shoulder joint adhesion among patients with primary frozen shoulder (FS). Background: FS, also known as adhesive capsulitis, is a pathological condition characterized by pain and potential functional impairment. The natural progression of FS involves three distinct stages: freezing, frozen, and thawing.
View Article and Find Full Text PDFJ Shoulder Elbow Surg
November 2024
Department of Orthopaedics, Tokushima University, Tokushima, Japan.
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