轮匝带
Zona orbicularis
定义
髋关节环状带（zona orbicularis）由环绕股骨颈的环形纤维构成，形成环状结构。该解剖特征对维持髋关节稳定性至关重要，尤其在抵抗股骨头分离力方面具有重要作用。[1-3]
从解剖学角度而言，髋关节囊扩张时最易识别环状带，约75%的病例中其呈马蹄形结构。[2] 其走行方向在股骨颈上方与股骨颈长轴垂直，向下移行时由后外侧向前内侧扭转。[2] 组织学研究表明，环状带并非独立结构，而是关节囊向内动态突入所形成的结构，其形态随髋关节体位的变化而改变。[1]
从生物力学角度而言，环状带作为股骨颈周围的锁环，通过抵抗分离力显著增强髋关节稳定性。[3] 尸体解剖研究证实，环状带完整时可降低分离载荷，从而支持上述功能。[3]
參考資料
1.Dynamic Changes of the Joint Capsule in Relation to the Zona Orbicularis: An Anatomical Study With Possible Implications for Hip Stability Mechanism.Tsutsumi M, Nimura A, Utsunomiya H, Akita K.Clinical Anatomy (New York, N.Y.). 2021;34(8):1157-1164. doi:10.1002/ca.23767.
2.Anatomy of the Zona Orbicularis of the Hip: A Magnetic Resonance Study.Malagelada F, Tayar R, Barke S, Stafford G, Field RE.Surgical and Radiologic Anatomy : SRA. 2015;37(1):11-8. doi:10.1007/s00276-014-1300-z.
3.The Proximal Hip Joint Capsule and the Zona Orbicularis Contribute to Hip Joint Stability in Distraction.Ito H, Song Y, Lindsey DP, Safran MR, Giori NJ.Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society. 2009;27(8):989-95. doi:10.1002/jor.20852.
