Ligamentum anulare quintum - 手指MRI - 轴向 PD FS - e-Anatomy
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Ligamentum anulare quintum

Ligamentum anulare quintum

定义

Muhammad A. Javaid

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第五环形滑车（A5）是一条位于远侧指间关节（DIP关节）上方的细小纤维束。它附着于远侧指间关节的掌侧板，并构成包绕指深屈肌（FDP）肌腱的纤维屈肌腱鞘的末端部分。

A5滑车有助于维持指深屈肌肌腱止于远节指骨时的排列对位，防止弓弦效应，并参与指尖的平滑屈曲运动。

请点击此处查看环形滑车及手指纤维鞘环形部的详细描述。

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參考資料

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  • Clavero JA, Alomar X, Monill JM, Esplugas M, Golanó P, Mendoza M, Salvador A. MR imaging of ligament and tendon injuries of the fingers. Radiographics. 2002 Mar-Apr;22(2):237-56. doi: 10.1148/radiographics.22.2.g02mr11237. PMID: 11896215.

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