. Röntgen ray diagnosis and therapy . the plan of treatment is but natural that ourFig. 155.—Fracture of Radius, therapy should be changed andUpward Bayonet-shaped Dis- directed by fuller clinical expe. PLACEMENT. J . L rience and anatomical the short space of time which has elapsed since Eontgensdiscovery, it has been found that the anatomical aspect of thefracture of the carpal end of the radius (inaccurately calledColless fracture) shows a number of types. It is true that themajority of cases are characterized by a breach of continuity from10-30 millimetres ab
. Röntgen ray diagnosis and therapy . the plan of treatment is but natural that ourFig. 155.—Fracture of Radius, therapy should be changed andUpward Bayonet-shaped Dis- directed by fuller clinical expe. PLACEMENT. J . L rience and anatomical the short space of time which has elapsed since Eontgensdiscovery, it has been found that the anatomical aspect of thefracture of the carpal end of the radius (inaccurately calledColless fracture) shows a number of types. It is true that themajority of cases are characterized by a breach of continuity from10-30 millimetres above the articular surface of the carpal epiphy-sis, which, on account of a peculiar turn of the lower fragment,causes that deformity of the wrist which is compared with a fork(displacement a la fourchette) or with a bayonet, or with a flat Z(Fig. 155). But besides this type, first described by Colles, therestill remains a large group differing from it materially. Withoutundervaluing the great work of our surgical masters before the. SHOULDER AND UPPEK BXTEEMITY 219 Rontgen era, and particularly commending the work of Nekton,Velpeau, Volkmann, and Koenig, we must still say that the raysfurnish the most convincing proof of the necessity of modifyingtheir interpretations of this injury. Thus, having regard to oldexperience as well as to information recently gained, the authorhas tried to classify those different forms of this much disputedfracture which appear to be most characteristic, and must ac-cordingly demand different therapeutic measures; and if we bearin mind the frequency of fractures of this type, and believe theyrepresent 22 per cent of all fractures, the importance of a detaileddiagnosis needs no further argumentation. The author distinguishes the following varieties of fracture ofthe lower end of the radius: (1) Simple extra-articular fracturewithout displacement (Colless fracture) ; (2) epiphyseal (chon-dro-epiphyseal and osteo-epiphyseal) separation; (3) fissure
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