Department of Orthopaedic Surgery, Leeds Teaching Hospitals NHS Trust, , Leeds, UK.
Br J Sports Med. 2013 Nov;47(17):1105-11. doi: 10.1136/bjsports-2013-092835. Epub 2013 Oct 4.
The extensor carpi ulnaris (ECU) muscle plays a key role not only in the active movements of wrist extension and ulnar deviation but also in providing stability to the ulnar side of the wrist. Its position relative to the other structures in the wrist changes with forearm pronation and supination. As such, it must be mobile yet stable. The ECU tendon relies on specific stabilising structures to hold it in the correct positions to perform its different functions. These structures can be injured in a variety of different athletic activities such as tennis, golf and rugby league, yet their injury and disruption is predictable when the mechanics of the ECU and the techniques of the sport are understood. The ECU tendon is also vulnerable to tendon pathologies other than instability. It lies subcutaneously and is easily palpated and visualised with diagnostic ultrasound, allowing early diagnosis and management of its specific conditions. Treatment includes rest, splintage and surgery with each modality having specific indications and recognised outcomes. This review described the functional anatomy in relevant sporting situations and explained how problems occur as well as when and how to intervene.
尺侧腕伸肌（ECU）不仅在腕关节伸展和尺侧偏斜的主动运动中起着关键作用，而且在为腕关节的尺侧提供稳定性方面也起着关键作用。它相对于腕关节中其他结构的位置随前臂旋前和旋后而变化。因此，它必须具有活动性但又要稳定。ECU 肌腱依靠特定的稳定结构将其保持在正确的位置以执行其不同的功能。这些结构在理解 ECU 的力学和运动技术时，可以在各种不同的运动活动中受伤，例如网球、高尔夫和橄榄球联赛，但当理解 ECU 的力学和运动技术时，这些结构的受伤和破坏是可以预测的。ECU 肌腱也容易受到除不稳定以外的肌腱病变的影响。它位于皮下，通过诊断性超声很容易触诊和可视化，从而可以早期诊断和管理其特定疾病。治疗包括休息、夹板固定和手术，每种方法都有特定的适应证和公认的结果。本综述描述了相关运动情况下的功能解剖结构，并解释了问题是如何发生的，以及何时以及如何进行干预。
