Department of Radiology, University of California at San Diego and VA Healthcare System San Diego, San Diego, CA, USA.
AJR Am J Roentgenol. 2010 Sep;195(3):629-36. doi: 10.2214/AJR.09.3173.
The objective of our study was to document discrete bone landmarks in the lateral epicondyle of the humerus that represent the "footprints" of those tendons and ligaments that attach to it using MRI-anatomic correlation in cadavers.
Thirty-three dried humeral specimens were inspected to document bone landmarks in the lateral epicondyle. MRI with anatomic correlation was performed in 10 additional cadaveric elbows. The locations of the tendinous and ligamentous attachments to the lateral epicondyle were determined with respect to the same osseous landmarks.
The surface of the lateral epicondyle ranged from a flat surface to a surface with up to six discrete landmarks: superior tubercle, anterior tubercle, posterior tubercle, intertubercular sulcus, rough area surrounding the tubercles, and epicondylar ridge. The radial collateral ligament attached to the superior aspect of the intertubercular sulcus and inferior aspect of the superior tubercle and was indistinguishable from the attachment of the lateral ulnar collateral ligament. The extensor carpi radialis brevis, extensor digitorum communis, and extensor digiti minimi had a common origin in the superior aspect of the lateral epicondyle. The extensor carpi ulnaris tendon arose from the posteroinferior aspect of the lateral epicondyle.
Our investigation documents osseous landmarks that are useful in the identification of the footprints of the tendons and ligaments that attach to the lateral epicondyle. Knowledge of these structures contributes to correct interpretation of MR images in persons with tendinous and ligamentous abnormalities in this region.
我们的研究目的是通过尸体的 MRI-解剖相关性，记录肱骨外上髁上代表附着于其上的肌腱和韧带“足迹”的离散骨标志。
检查了 33 个干燥的肱骨标本，以记录外上髁的骨标志。在另外 10 个尸体肘部进行了具有解剖相关性的 MRI。根据相同的骨性标志确定肌腱和韧带附着在外上髁的位置。
外上髁的表面从平坦表面到有多达六个离散标志：上结节、前结节、后结节、结节间沟、结节周围粗糙区和髁嵴。桡侧副韧带附着于结节间沟的上表面和上结节的下表面，与外侧尺侧副韧带的附着难以区分。桡侧腕短伸肌、指总伸肌和小指伸肌在外侧上髁的上表面有共同的起点。尺侧腕伸肌腱发自外上髁的后下表面。
我们的研究记录了有助于识别附着于外上髁的肌腱和韧带的“足迹”的骨性标志。了解这些结构有助于正确解释该区域肌腱和韧带异常患者的磁共振图像。
