Maniglio Mauro, Lin Charles C, Flueckiger Remy, Zumstein Matthias A, McGarry Michelle H, Lee Thay Q
Orthopaedic Biomechanics Laboratory, Congress Medical Foundation, Pasadena, CA, USA.
Inselspital, Bern University Hospital, University of Bern, Switzerland.
J Hand Surg Eur Vol. 2020 Nov;45(9):931-938. doi: 10.1177/1753193420944705. Epub 2020 Jul 27.
Understanding of the exact topography of the distal radioulnar ligaments insertions remains limited. An anatomical study was performed in 21 fresh frozen cadaveric wrists, where the superficial and deep ligaments were sequentially transected sharply at their ulnar insertions. The relationships between the distal radioulnar ligament footprints relative to the bony landmarks of the ulnar styloid were digitized. Our study demonstrated that in the coronal plane, the superficial distal radioulnar ligaments inserted at an average of 87% of the styloid height proximally to the styloid tip distally. The deep distal radioulnar ligaments inserted at an average of 81% of the styloid height distally to the fovea proximally. The superficial footprint had an area of 10.6 mm on the ulnar styloid. The deep distal radioulnar ligaments attachment was asymmetric and generally had two separate footprints. This study adds important topographical knowledge about the footprint of the distal radioulnar ligaments and may contribute to understanding the consequences of ulnar styloid fractures and distal radioulnar ligaments lesions.
对桡尺远侧韧带附着的确切局部解剖结构的了解仍然有限。对21个新鲜冷冻的尸体手腕进行了一项解剖学研究，在研究中，浅韧带和深韧带在其尺侧附着处被依次锐性横断。将桡尺远侧韧带附着点相对于尺骨茎突骨标志的关系进行数字化处理。我们的研究表明，在冠状面上，浅桡尺远侧韧带近端附着于茎突尖远端平均茎突高度的87%处。深桡尺远侧韧带近端附着于凹窝远端平均茎突高度的81%处。浅附着点在尺骨茎突上的面积为10.6平方毫米。深桡尺远侧韧带附着不对称，通常有两个独立的附着点。本研究增加了关于桡尺远侧韧带附着点的重要局部解剖学知识，并可能有助于理解尺骨茎突骨折和桡尺远侧韧带损伤的后果。
