医学影像英语每日读丨108.ACL Mucoid Degeneration

每天朗读一段医学影像学英语文章

朗读者：张恒老师领读

Notes:

1.  anterior cruciate ligament [ænˈtɪriɚ ˈkruʃiˌet ˈlɪɡəmənt] 前交叉韧带

2. mucoid ['mju:kɔɪd] adj. 黏液样的

3. cyst [sɪst] n. 囊肿

4. interstitial [ˌɪntərˈstɪʃl] adj. 间质的，裂缝的

5. bruise [bruz] vt.vi.n. 挫伤;

6. meniscal ['mənɪskl] 半月板的

7. subluxation [ˌsʌblʌk'seɪʃən] n. 半脱位

8. tibia [ˈtɪbiə] n. 胫骨

9.  ligamentous [lɪgə'mentəs] adj. 韧带的

10. celery stalk

The celery stalk sign is a term given to the appearance of the anterior cruciate ligament which has undergone mucoid degeneration and has been likened to that of a celery stalk. Its low signal longitudinal fibres are separated from each other by higher signal mucinous material, best appreciated on T2 weighted images.

11. intact [ɪn'tækt] adj. 完好无损

12. arthroscopy [a:'θrɒskəpɪ] n. 关节镜

Anterior cruciate ligament mucoid degeneration  
Anterior cruciate ligament (ACL) mucoiddegeneration, along with tears and anterior cruciate ligament ganglion cysts, is a relatively common cause of increased signal within theanterior cruciate ligament (ACL). The appearance can mimic acute or chronic interstitial partial tears of the ACL. However, in the case of mucoid degeneration secondary signs of ACL injury are usually absent.Secondary signs include bone bruising, meniscal tears, anterior subluxation of the tibia and other ligamentous injuries.
Radiographic features
MRI
On MRl, the ligament is thickened and illdefined with a "celery stalk" appearance. Its signal is increased on all sequences. Intact fibres are best seen on T2-weighted sequences.
MRl is better at detecting mucoid degeneration than arthroscopy, as the surface of the ligament is often intact.

翻译：坚持学习

前交叉韧带ACL的粘液样变
ACL粘液样变，ACL撕裂，ACL腱鞘囊肿，是ACL信号增高的常见原因。ACL粘液样变征象类似于ACL急性或慢性间质部分撕裂。然而，ACL损伤的间接征象在ACL粘液样变不常见，比如骨挫伤，半月板撕裂，胫骨平台前移，以及其他韧带损伤的征象。

ACL粘液样变的影像征象
在MRI上，前交叉韧带增粗，边界欠清，“芹菜梗”样外观。在所有序列上都可见，完整的纤维在T2W上显示最清晰。
磁共振在检测韧带粘液样变方面优于关节镜，因为韧带表面通常是完好无损。

来源：每天朗读一段医学影像学英语文章

圈主

深圳市人民医院放射科副主任医师杨敏洁

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