Three-dimensional reconstructions of the Achilles tendon insertion in man
Three-dimensional reconstructions of the Achilles tendon insertion in man
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DOI：
10.1046/j.0021-8782.2001.00016.x
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发表时间：
2002-02-01
影响因子：
2.4
通讯作者：
Benjamin, M
中科院分区：
文献类型：
--
作者：
Milz, S;Rufai, A;Benjamin, M
II型胶原在跟腱矢状断面的分布已被用于重建与其插入相关的三种纤维软骨（籽状、骨膜和端骨）的三维形状和位置。结果表明，籽状软骨和骨膜纤维软骨的形状和位置有密切的对应关系，这可能是因为它们的功能相互依赖。前者在足背屈时保护肌腱免受压迫，后者保护跟骨上粗隆。当在3D中绘制钙化的内端纤维软骨和软骨下骨的区域时，重建显示在插入部位的钙化纤维软骨和骨之间存在复杂的互锁模式。我们认为这对于将肌腱固定在骨骼上是至关重要的，因为肌腱插入的发育方式使得许多胶原纤维不太可能从肌腱到骨骼穿过组织边界。当力从加载的肌腱传递到骨骼时，它通过一系列高度定向的小梁定向到足底筋膜，这些小梁在厚树脂切片的3D中清晰可见。
The distribution of type II collagen in sagittal sections of the Achilles tendon has been used to reconstruct the three-dimensional (3D) shape and position of three fibrocartilages (sesamoid, periosteal and enthesis) associated with its insertion. The results showed that there is a close correspondence between the shape and position of the sesamoid and periosteal fibrocartilages - probably because of their functional interdependence. The former protects the tendon from compression during dorsiflexion of the foot, and the latter protects the superior tuberosity of the calcaneus. When the zone of calcified enthesis fibrocartilage and the subchondral bone are mapped in 3D, the reconstructions show that there is a complex pattern of interlocking between pieces of calcified fibrocartilage and bone at the insertion site. We suggest that this is of fundamental importance in anchoring the tendon to the bone, because the manner in which a tendon insertion develops makes it unlikely that many Collagen fibres pass across the tissue boundary from tendon to bone. When force is transmitted to the bone from a loaded tendon, it is directed towards the plantar fascia by a series of highly orientated trabeculae that are clearly visible in 3D in thick resin sections.