. Diseases of bones and joints . Fig. 11. Synovial tuberculosis. Section from synovial membrane show-ing typical tuberculosis (magnified) about 20 diameters. A—areasof necrosis. B—Giant cells. We recognize, then, in bones and joints threeactive tissues, namely, the marrow, the synovia, andthe inner layer of the periosteum; and two passive DISEASES OF BONES AND JOINTS 17 tissues, the bone and the cartilage. The active tis-tues are continuous with one another and presentsimilarity in structure and in their reaction to dis-ease. The disease may start in one and spread toanother. Certain diseases
. Diseases of bones and joints . Fig. 11. Synovial tuberculosis. Section from synovial membrane show-ing typical tuberculosis (magnified) about 20 diameters. A—areasof necrosis. B—Giant cells. We recognize, then, in bones and joints threeactive tissues, namely, the marrow, the synovia, andthe inner layer of the periosteum; and two passive DISEASES OF BONES AND JOINTS 17 tissues, the bone and the cartilage. The active tis-tues are continuous with one another and presentsimilarity in structure and in their reaction to dis-ease. The disease may start in one and spread toanother. Certain diseases show a predilection forone, certain for two, and certain affect all , acute articular rheumatism affects thesynovia, syphilis the periosteum, the marrow, and. Fig. 12. Photomicrograph of proliferating synovia. Zeiss objective aa. Ocular 2; from a case of probable syphilitic arthritis of the knee, wrongly diagnosed as tuberculosis, and secondarily infected fol-lowing operation. rarely the synovia, gonorrhea, the synovia, andrarely the marrow and the periosteum, tuberculosisand pus infections all three. The bone and thecartilage are continuous with each other, and theirreaction to disease is similar also. They form thestroma, the others the parenchyma. The bone isthe honeycomb which the bees have built up. Asfor the ligament and outer layer of the periosteum, 18 DISEASES OF BONES AND JOINTS Peculiarities of Disease in Bones Synovial Folds they are the hive with which neither the bees northe honeycomb have any active connection. It must never be forgotten in dealing with bonesthat the morbid processes in them run their coursein the marrow, locked up in a firm rigid case orshell. The effects of the disease are made manifestupon this shell, but
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbon, booksubjectbones
