Intra-articular temperature monitoring during radiofrequency ablation in ex-vivo bovine hip joints via Fiber Bragg grating sensors

BMC Musculoskeletal Disorders

Research

Giuseppe Salvatore¹  Alberto Lalli²  Umile Giuseppe Longo²  Francesca De Tommasi³  Emiliano Schena³  Carlo Massaroni⁴  Daniela Lo Presti⁴ 

[1] Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128, Roma, Italy;Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128, Roma, Italy;Research Unit of Orthopaedic and Trauma Surgery, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21, 00128, Roma, Italy;Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128, Roma, Italy;Unit of Measurements and Biomedical Instrumentation, Università Campus Bio-Medico di Roma, via Alvaro del Portillo, 200, 00128, Trigoria, Rome, Italy;Unit of Measurements and Biomedical Instrumentation, Università Campus Bio-Medico di Roma, via Alvaro del Portillo, 200, 00128, Trigoria, Rome, Italy;

关键词: Radiofrequency ablation;    Fiber optic sensors;    Fiber Bragg grating sensors;    Joint temperature;    Hip arthroscopy;   

DOI  :  10.1186/s12891-023-06836-6

 received in 2023-05-04, accepted in 2023-08-26,  发布年份 2023

来源: Springer

【 摘 要 】

PurposeRadiofrequency ablation is an increasingly used surgical option for ablation, resection and coagulation of soft tissues in joint arthroscopy. One of the major issues of thermal ablation is the temperature monitoring across the target areas, as cellular mortality is a direct consequence of thermal dosimetry. Temperatures from 45 °C to 50 °C are at risk of damage to chondrocytes. One of the most reliable tools for temperature monitoring is represented by fiber optic sensors, as they allow accurate and real-time temperature measurement via a minimally invasive approach. The aim of this study was to determine, by fiber Bragg grating sensors (FBGs), the safety of radiofrequency ablation in tissue heating applied to ex-vivo bovine hip joints.MethodsEx vivo bovine hips were subjected to radiofrequency ablation, specifically in the acetabular labrum, for a total of two experiments. The WEREWOLF System (Smith + Nephew, Watford, UK) was employed in high operating mode and in a controlled ablation way. One optical fiber embedding seven FBGs was used to record multipoint temperature variations. Each sensor was 1 mm in length with a distance from edge to edge with each other of 2 mm.ResultsThe maximum variation was recorded in both the tests by the FBG1 (i.e., the closest one to the electrode tip) and was lower than to 2.8 °C. The other sensors (from FBG2 to FBG7) did not record a significant temperature change throughout the duration of the experiment (maximum up to 0.7 °C for FBG7).ConclusionsNo significant increase in temperature was observed at any of the seven sites. The sensor nearest to the radiofrequency source exhibited the highest temperature rise, but the variation was only 3 °C. The minimal temperature increase registered at the measurement sites, according to existing literature, is not expected to be cytotoxic. FBGs demonstrate the potential to fulfil the strict requirements for temperature measurements during arthroscopic surgery.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

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