Rule J, Yao L, Seeger L L
Department of Radiological Sciences, University of California, Los Angeles 90024-1721.
AJR Am J Roentgenol. 1993 Dec;161(6):1241-4. doi: 10.2214/ajr.161.6.8249733.
The plantar calcaneonavicular or spring ligament is visualized inconsistently and incompletely on routine MR images of the foot. This ligament is a vital stabilizer of the longitudinal arch of the foot, providing support for the head of the talus, which rests on the ligament's central portion. Laxity or rupture of the spring ligament permits plantar flexion of the talus. This motion results in valgus alignment of the calcaneus and a flatfoot deformity (pes planovalgus). Laxity or rupture of the spring ligament can develop in cases of chronic dysfunction of the posterior tibial tendon. In rupture of the posterior tibial tendon, surgical management may include plication of the spring ligament in addition to repair or reconstruction of the tendon to stabilize the medial column of the foot. Thus, the status of the spring ligament can be a significant consideration in preoperative planning. This pictorial essay illustrates the normal MR anatomy of the spring ligament, the planes of imaging required for optimal depiction of the ligament, and the neighboring structures with which the ligament can be confused.
在足部常规磁共振成像（MR）图像上，跟舟足底韧带（又称弹簧韧带）的显示并不一致且不完整。该韧带是足纵弓的重要稳定结构，为位于韧带中央部分的距骨头提供支撑。弹簧韧带松弛或断裂会导致距骨跖屈。这种运动会导致跟骨外翻排列以及扁平足畸形（扁平外翻足）。弹簧韧带的松弛或断裂可发生于胫后肌腱慢性功能障碍的情况下。在胫后肌腱断裂时，手术治疗可能包括除修复或重建肌腱外，还对弹簧韧带进行折叠，以稳定足的内侧柱。因此，弹簧韧带的状态在术前规划中可能是一个重要的考虑因素。这篇图文文章展示了弹簧韧带的正常MR解剖结构、最佳显示该韧带所需的成像平面，以及可能与该韧带混淆的相邻结构。
