探讨高频超声应用于肱二头肌远端肌腱损伤的诊断价值。

回顾性分析2020年2月至2025年1月在佛山市中医院就诊的35例肱二头肌远端肌腱损伤患者的超声影像资料。采用Kappa一致性系数检验评估超声检查结果与手术及MRI结果的一致性；以手术结果为金标准，未手术者以MRI为标准，采用诊断试验方法评估高频超声对三类损伤类型的诊断效能。

35例患者中，16例接受手术治疗，19例未行手术；其中肱二头肌远端肌腱Ⅰ级损伤9例、Ⅱ级损伤（部分撕裂）15例、Ⅲ级损伤（完全断裂）11例。高频超声将1例Ⅱ级损伤（小部分撕裂）误诊为Ⅰ级损伤，将1例Ⅱ级损伤（大部分撕裂并肘前血肿）误诊为Ⅲ级损伤。结果显示高频超声诊断结果与手术及MRI诊断结果一致性良好（Kappa=0.91），总体诊断符合率达94.29%（33/35）。高频超声对Ⅲ级损伤和Ⅰ级损伤的诊断敏感度与阴性预测值均达100%。

高频超声可清晰显示肱二头肌远端肌腱的解剖细节及损伤特征，准确评价其损伤程度，尤其在动态评估及急性损伤场景中具有独特优势，可作为一线影像学检查手段，为临床诊断和治疗提供可靠依据。

To assess the diagnostic value of high-frequency ultrasound in distal biceps tendon injuries.

A retrospective analysis was conducted on the ultrasound imaging data of 35 patients with distal biceps tendon injuries who were treated at Foshan Traditional Chinese Medicine Hospital from February 2020 to January 2025. The Kappa consistency test was used to evaluate the consistency between the ultrasound examination results and the results of surgery and magnetic resonance imaging (MRI). Taking surgical results as the gold standard (and MRI results as the standard for non-surgical patients), the diagnostic efficacy of high-frequency ultrasound for three types of distal biceps tendon injuries was assessed.

Among the 35 patients, 16 underwent surgical treatment and 19 did not. Specifically, there were 9 cases of grade Ⅰ distal biceps tendon injury, 15 cases of grade Ⅱ injury (partial tear), and 11 cases of grade Ⅲ injury (complete rupture). High-frequency ultrasound misdiagnosed 1 case of grade Ⅱ injury (small partial tear) as grade Ⅰ injury, and 1 case of grade Ⅱ injury (large partial tear with anterior elbow hematoma) as grade Ⅲ injury. The diagnostic results of high-frequency ultrasound were in good consistency with those of surgery and MRI (Kappa = 0.91), with an overall diagnostic coincidence rate of 94.29% (33/35). For grade Ⅲ and grade Ⅰ injuries, the diagnostic sensitivity and negative predictive value of high-frequency ultrasound both reached 100%.

High-frequency ultrasound can clearly display the anatomical details and injury characteristics of the distal biceps tendon, and accurately evaluate the degree of injury, demonstrating unique advantages especially in dynamic assessment and acute injury scenarios. Therefore, it can be used as a first-line imaging examination method to provide a reliable basis for clinical diagnosis and treatment of distal biceps tendon injuries.