Selke B, Bogusch G
Institut für Anatomie, Freie Universität Berlin.
Acta Anat (Basel). 1989;136(1):69-75.
Skeleton, muscles and tendons were investigated in 3 lower legs with aplasia of the tibia. The tibiofibular joint appears to be rather a syndesmosis than a diarthrosis. In all 3 cases, talus and calcaneus are connected by a synostosis. Also in the other parts of the skeleton of the feet, synarthroses with different extensions are found. The muscles, normally originating from the tibia, have shifted their origin to the fibula. The proximal part of the inserting tendons under the retinacula is quite normal. Also, their distal part in the region of the metatarsalia and of the digits exhibits no alterations. In the region of the tarsus in which already alterations in bone formation are found, the tendons of the flexor muscles of the toes exhibit some variations. Often the muscles show a new, strong insertion into the bones of the tarsus. The normal connection between the proximal and distal parts of the tendons is sometimes still indicated by a thin bundle of collagenous fibers. In all 3 cases, the tibialis anterior muscle inserts into the distal part of the tendons of the flexor muscles of the toes, indicating that there are also connections between tendons of muscles from different blastemas.
对3例胫骨发育不全的小腿进行了骨骼、肌肉和肌腱的研究。胫腓关节似乎更像是一种韧带联合而非动关节。在所有3例中，距骨和跟骨通过骨性连接相连。在足部骨骼的其他部位也发现了不同程度的不动关节。通常起自胫骨的肌肉，其起点已转移至腓骨。支持带下方的肌腱近端部分相当正常。同样，它们在跖骨和趾区域的远端部分也未显示出改变。在已发现骨形成改变的跗骨区域，趾屈肌的肌腱表现出一些变异。这些肌肉常常在跗骨上有新的、牢固的附着。肌腱近端和远端部分之间的正常连接有时仍由一束细的胶原纤维表示。在所有3例中胫前肌均附着于趾屈肌肌腱的远端部分，这表明来自不同胚基的肌肉肌腱之间也存在连接。
