Analysis of parameters influencing intraarticular temperature during radiofrequency use in shoulder arthroscopy.

PURPOSE: The aim of this study was to analyze the influence of several factors on the temperature in the work chamber during shoulder arthroscopy procedures in order to identify danger zones when using radiofrequency.

METHODS: Intraarticular temperature was measured intraoperatively using system with special probe that directly measured the temperature in 22 patients. Data collection was prospective. The main parameters studied were the measurement of the temperature depending on: localization of the procedure (glenohumeral or subacromial), the use of coagulation or ablation, the number of portals, the pressure of the arthropump, the time of use, the blood pressure and the temperature of the operating room.

RESULTS: Ninety-three recordings were made. No complications were identified. Addition of a portal reduces the average elevation of 3.8 °C (p < 0.05). Ambient temperature above 19.15 °C with two portals leads to an average increase of 13.3 °C (p < 0.05). Increasing the pressure of the arthropump of 10 mmHg increases the temperature of 0.8 °C (p < 0.05). No significant difference was found on the change in blood pressure, location and mode of use.

CONCLUSIONS: These results show the interest of controlling these factors when performing shoulder arthroscopy procedure. This study identifies situations of high joint risk when using radiofrequency and thus to prevent secondary complications such as burns and massive chondrolyses.