A treatise on orthopedic surgery . tlydue to the inability of the patient to control the muscles of theneck, has been described by Brissaud.^ The deformity is notdue to muscular spasm, since it can be corrected by the pressureof a finger on the head. The condition is called by Brissaud alocal paralysis of the -will—a form of neurosis allied to neuras-thenia, epilepsy, and functional spasm. 1 These de Paris, 1894. CHAPTER XX. DISABILITIES AND DEFOEMITIES OF THE FOOT. GENERAL DESCRIPTION OF THE FOOT AND OF ITSFUNCTIONS. The function of the foot is twofold: to serve as a passivesupport of the wei
A treatise on orthopedic surgery . tlydue to the inability of the patient to control the muscles of theneck, has been described by Brissaud.^ The deformity is notdue to muscular spasm, since it can be corrected by the pressureof a finger on the head. The condition is called by Brissaud alocal paralysis of the -will—a form of neurosis allied to neuras-thenia, epilepsy, and functional spasm. 1 These de Paris, 1894. CHAPTER XX. DISABILITIES AND DEFOEMITIES OF THE FOOT. GENERAL DESCRIPTION OF THE FOOT AND OF ITSFUNCTIONS. The function of the foot is twofold: to serve as a passivesupport of the weight of the body, and as an active lever to raiseand propel it. For the proper performance of these functionsit is constructed to permit elasticity under pressure, and analternation of attitudes under strain, that protect it from injury. The Arches.—The most noticeable peculiarity of the foot isthe arrangement of its arches. As has been suggested by Ellisand others, the construction and shape of the arched part of the Fig. Longitudinal section of the cast of the arch at the point A in Fig. M4. A,the astragalonavicular junction; Bj the internal tuberosity of the os caleis ; C,the head of the first metatarsal bone. foot may be better understood by considering it as half of thearch formed by the two feet. This complete arch may be demon-strated by making an imprint of the apposed feet in plaster-of-Paris. The plaster cast which represents it will appear in shapesomewhat like an inverted saucer, the part of each foot that restsupon the ground forming half of an irregular ring. If the plas-ter cast is sawed into equal sections it will be seen that thehighest or thickest part of each division is at the astragalo-navicular junction; from this point the arch descends sharf)lyto the tuberosities of the os caleis, and gradually to the outerborder, beneath the cuboid bone, and to the metatarsoj^halangealjoints (Eig. 443). A cross-section of the cast will show the con-tour of what
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Keywords: ., bookauthorwhitmanr, bookcentury1900, bookdecade1910, bookyear1910
