Scanning Electron Microscopic Studies on the Normal Epiphyseal Growth Plate by Resin Cracking Method

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Fine Structure of the epiphyseal growth plate was studied by means of scanning electron microscopy, using Tanaka's resin cracking method. Four layers were recognized in the growth plate, that is to say resting, proliferating, hypertrophic and degenerating layers. The structure of the intracellular components and matrix was observed and it was almost similar to that which had been observed by transmision electron microscopy. However a few different views were found which are described as follows.1. The numerous cytoplasmic processes were found around the chondrocytes of the proliferating cell layer. These were coralliform in appearance and considered to be combinded with the collagen fibrils in the matrix.2. Calcified matrix was increased in the part adjacent to metaphysis. In this layer the clusters of hydroxy apatite crystals were spherical (about 0.5-1.0μ in diameter).They were scattered uniformly, and attached to netlike collagen fibrils. On these fibrils the characteristic cross striations were found first by us by means of scanning electron microscopy.
西日本整形・災害外科学会の論文