. Diseases of bones and joints . Fig. of multiarticular lesions of Type II (Goldthwait). tions are characteristic of the disease. The nodularbone formations in the terminal phalangeal jointswere described many years ago by Heberden, andhave received the name of Heberdens Nodes. Portions of the proliferated cartilage may be tornloose and may form foreign bodies in the joint. HeberdensNodes 134 DISEASES OF BONES AND JOINTS The synovia in this type may appear compara-tively normal, or it may proliferate in spots. Ac-cording to Nichols and Richardson the localisedproliferation may resu
. Diseases of bones and joints . Fig. of multiarticular lesions of Type II (Goldthwait). tions are characteristic of the disease. The nodularbone formations in the terminal phalangeal jointswere described many years ago by Heberden, andhave received the name of Heberdens Nodes. Portions of the proliferated cartilage may be tornloose and may form foreign bodies in the joint. HeberdensNodes 134 DISEASES OF BONES AND JOINTS The synovia in this type may appear compara-tively normal, or it may proliferate in spots. Ac-cording to Nichols and Richardson the localisedproliferation may result in the formation of papil-lary masses, composed of granulation or of dense. Fig. 53. Photomicrograph of synovia from a case of arthritis of the hipin an adult male, Type II. Note the collection of round cells aboutthe blood vessel, and the fibrous structure of the membrane. Zeissapochromatic 16 mm. objective. connective tissue. These masses also may be tornloose later and form joint mice. Adhesions never form between the opposingjoint surfaces, and bony or fibrous union nevertakes place. We have seen in Type I. that the ad-hesions between the bone ends are due to the pro- DISEASES OF BONES AND JOINTS 135 liferation of the synovia and of the marrow throughthe gaps in the cartilage, but in this type the pro-liferation, if it exists at all, is not marked. The ob-struction to motion is purely mechanical. It willbe remembered that in old fractures, where eburma-tion of the bone ends has taken place, union is im-possible.
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