肱骨外上髁炎及其并发症的MRI表现和相关性研究

MR imaging of lateral epicondylitis and its complications

目的:运用高分辨率MRI探索肱骨外上髁炎除伸肌总腱(CET)损伤外是否还合并其他改变,以及两者间是否存在一定的相关性。方法:23例肱骨外上髁炎患者的MRI图像由两位放射诊断医师进行分析评价,其评价内容包括CET损伤程度及合并的其他损伤,两位评价结果不一致时,经协商达成一致意见。将CET损伤程度和合并的其他损伤行Spearman等级相关分析,P<0.05认为有显著相关。结果:23例患者共24个患病肘关节,24个肘关节肌腱均有不同程度的损伤(轻度损伤10个,中度7个,重度7个)。其他并发症主要包括:桡侧尺副韧带(LUCL)损伤22个,伸肌损伤7个,骨质损伤6个,关节腔积液6个。CET和LUCL的损伤程度呈正相关(r=0.877,P<0.01)。结论:除CET损伤外,肱骨外上髁炎还合并其他改变,其中LUCL损伤最常见,并且与CET损伤呈正相关。

Objective：To investigate whether an injury of the common extensor tendon（CET）is associated with other abnormalities in lateral epicondylitis of humerus and find the potential relationships between these abnormalities by using high-resolution magnetic resonance imaging（MRI）.Methods：Twenty-three patients were examined with 3.0T MR.Two readers were recruited for MR images evaluation.Image features were recorded in terms of the injury degree of CET;associated injuries in the elbow joint.Spearman＇s rank correlation analysis was performed to analyze the relationships between the injury degree of CET and associated abnormalities of the elbow joint,correlations were considered significant at P0.05.Results：A total of 24 elbows in 23 patients were included.Various degrees of injuries were found in all 24CETs（10mild,7moderate and 7severe）.Associated abnormalities were detected in accompaniment of the elbow joints including ligaments,tendons,saccus synovialis and muscles.A significantly positive correlation（r=0.877,P〈0.01）was found in injuries of CET and lateral ulnar collateral ligament（LUCL）.Conclusion：Injury of the CET is not an isolated lesion for lateral picondylitis,which is often accompanied with other abnormalities,of which the LUCL injury is the most commonly seen in lateral epicondylitis,and there is a positive correlation between the injury degree in CET and LUCL.