Читать книгу Musculoskeletal Disorders - Sean Gallagher - Страница 28

In lateral epicondylitis, it is believed that a common extensor tendon (a conglomeration of the tendons of the extensor carpi radialis brevis, the extensor digitorum, the extensor digiti minimi, and the extensor carpi ulnaris) is affected by progressive process of inflammation and then degeneration (Figure 2.5). The degeneration of the tendon is the result of repetitive application of stress, leading to the microtear development in the common tendon (Kraushaar & Nirschl, 1999). The accumulation and growth of microtears is the process by which tendinosis initiates and propagates in the tendon. If the tendon continues to experience stress in this region, these pathologic changes may ultimately lead to partial or complete rupture of the tendon (Kraushaar & Nirschl, 1999).

Figure 2.5 Location of inflamed or injured tissues in the extensor carpi radialis brevis (ECRB) tendon.

Jacobson, J. A., Chiavaras, M. M., Lawton, J. M., Downie, B., Yablon, C.M., & Lawton, J. (2014). Radial collateral ligament of the elbow: Sonographic characterization with cadaveric dissection correlation and magnetic resonance arthrography. Journal of Ultrasound in Medicine, 33(6), 1041–1048. DOI: 10.7863/ultra.33.6.1041. Wiley.