Biomechanical Study of Load Transmission in the Wrist Joint

1.桡骨远端骨折后载荷传递的生物力学研究设计了一种测量腕关节载荷传递的实验模型。当背侧倾斜度增加20度以上，正方差大于2 mm时，放射状关节的轴向力大于月骨关节。结论：1.矫正性截骨在生物力学条件下应予以考虑。腕关节的负荷传递--TFC切除的效果-测量腕关节的负荷传递，以确定部分和完全切除TFC的影响。在TFC部分切除的情况下，TFC的轴向力减小。因此，部分切除被认为是有效的治疗方法。在完全切除中。TFC的轴向力增大。这些结果表明，TFCC是缓冲腕关节压力的重要减震器。腕关节在舟月骨分离时的载荷传递腕舟骨掌侧旋转时，腕关节的放射月关节和腕中关节的月头关节的轴力和接触面积明显增加。结果提示，腕舟骨掌侧旋转可导致腕舟月骨进行性塌陷。

1. A biomechanical study of load transmission after distal radial fractruresAn experimental model of distal radial fracture was disigned to measure the load transmission through the wrist joint. The axial force in the radioscaphoid articulation became bigger than the radiolunate articulation when dorsal tilt increased by more than 20 degrees and plus variant more than 2mm. Corrective osteotomy should be considered biomechanicaly in thoes conditions.2. Load transmission in the wrist joint--Effect of TFC excion---Load transmission of the radiocarpal joint were measured for the determination of the influence of patial and complete excision of the TFC. In partial excision of the TFC, axial force of the TFC was reduced. Thus partial resection was thought to be effective treament metod. In complete excision. Axial force on TFC increased. Those resuls suggest that the TFCC is an important shock absorber buffering pressure from wrist joint.3. Load transmission of the wrist joint on scapholunate dissociationThe axial force and contact area of the radiolunate articulation in radiocarpal joint and the lunocapitate articulation in mid carpal joint were markedly increased on volar rotation of the scaphoid bone. These results suggest that volar rotation of scaphoid can induce scapholunate advanced collapsed wrist.