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The time-dependent effects of bipolar radiofrequency energy on bovine articular cartilage
Journal of Orthopaedic Surgery and Research ( IF 2.8 ) Pub Date : 2020-03-12 , DOI: 10.1186/s13018-020-01626-5
Liangquan Peng , Yusheng Li , Kai Zhang , Qi Chen , Lulu Xiao , Yiyun Geng , Yong Huang , Weimin Zhu , Wei Lu , Greg Zhang , Zhenhan Deng , Daping Wang

The purpose of this study was to compare the effect of bipolar radiofrequency energy (bRFE) on chondroplasty at the different time durations in an in vitro experiment that simulated an arthroscopic procedure. Six fresh bovine knees were used in our study. Six squares were marked on both the medical and lateral femoral condyles of each femur. Each square was respectively treated with bRFE for 0 s, 10 s, 20 s, 30 s, 40 s and 50 s. Full-thickness articular cartilage specimens were harvested from the treatment areas. Each specimen was divided into three distinct parts: one for hematoxylin/eosin staining histology, another for cartilage surface contouring assessment via scanning electron microscopy (SEM), and the last one for glycosaminoglycan (GAG) content measurement. bRFE caused time-correlated damage to chondrocytes, and GAG content in the cartilage was negatively correlated to exposure time. bRFE caused time-correlated damage to chondrocytes. The GAG content in the cartilage negatively correlated with the exposure time. The sealing effect positively correlated with the exposure time. Additionally, it took at least 20 s of radiofrequency exposure to render a smooth cartilage surface and a score of 2 (normal) in the scoring system used. bRFE usage in chondroplasty could effectively trim and polish the cartilage lesion area; however, it induces a dose-dependent detrimental effect on chondrocytes and metabolic activity that negatively correlated with the treatment time. Therefore, cautions should be taken in the use of bRFE for treatment of articular cartilage injury.

中文翻译:

双极射频能量对牛关节软骨的时间依赖性

这项研究的目的是在模拟关节镜程序的体外实验中比较双极射频能量(bRFE)对不同时间的软骨形成的影响。在我们的研究中使用了六个新鲜的牛膝。在每个股骨的内,外股骨les上都标记了六个正方形。每个方格分别用bRFE处理0 s,10 s,20 s,30 s,40 s和50 s。从治疗区域收集全厚度关节软骨标本。每个标本分为三个不同的部分:一个用于苏木精/曙红染色的组织学,另一个用于通过扫描电子显微镜(SEM)评估软骨表面轮廓,最后一个用于糖胺聚糖(GAG)含量测量。bRFE对软骨细胞造成了与时间相关的损害,软骨中的GAG含量与暴露时间呈负相关。bRFE对软骨细胞造成了与时间相关的损害。软骨中的GAG含量与暴露时间负相关。密封效果与暴露时间呈正相关。此外,至少要花费20 s的射频暴露时间才能使软骨表面光滑,并且在使用的评分系统中得分为2(正常)。软骨重建术中使用bRFE可以有效地修剪和抛光软骨病变区域;然而,它诱导了对软骨细胞和代谢活性的剂量依赖性有害作用,该作用与治疗时间负相关。因此,在使用bRFE治疗关节软骨损伤时应谨慎。软骨中的GAG含量与暴露时间负相关。密封效果与暴露时间呈正相关。此外,至少要花费20 s的射频暴露时间才能使软骨表面光滑,所使用的评分系统得分为2(正常)。软骨重建术中使用bRFE可以有效地修剪和抛光软骨病变区域;然而,它诱导了对软骨细胞和代谢活性的剂量依赖性有害作用,该作用与治疗时间负相关。因此,在使用bRFE治疗关节软骨损伤时应谨慎。软骨中的GAG含量与暴露时间负相关。密封效果与暴露时间呈正相关。此外,至少要花费20 s的射频暴露时间才能使软骨表面光滑,并且在使用的评分系统中得分为2(正常)。软骨重建术中使用bRFE可以有效地修剪和抛光软骨病变区域;然而,它诱导了对软骨细胞和代谢活性的剂量依赖性有害作用,该作用与治疗时间负相关。因此,在使用bRFE治疗关节软骨损伤时应谨慎。至少要花费20 s的射频暴露时间才能使软骨表面光滑,并且在使用的评分系统中得分为2(正常)。软骨成形术中使用bRFE可以有效地修剪和抛光软骨病变区域;然而,它诱导了对软骨细胞和代谢活性的剂量依赖性有害作用,该作用与治疗时间负相关。因此,在使用bRFE治疗关节软骨损伤时应谨慎。至少要花费20 s的射频暴露时间才能使软骨表面光滑,并且在所使用的评分系统中得分为2(正常)。软骨重建术中使用bRFE可以有效地修剪和抛光软骨病变区域;然而,它诱导了对软骨细胞和代谢活性的剂量依赖性有害作用,该作用与治疗时间负相关。因此,在使用bRFE治疗关节软骨损伤时应谨慎。
更新日期:2020-03-12
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