Medical and surgical reports (1864) (14596919717)

Identifier: medicalsurgicalr13bost (find matches)

Title: Medical and surgical reports

Year: 1864 (1860s)

Authors: Boston City Hospital

Subjects:

Publisher: Boston

Contributing Library: Columbia University Libraries

Digitizing Sponsor: Open Knowledge Commons

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entirely cartilaginous at birth. Ossification in the metacarpalbones and phalanges begins about the eighth week. As the time of ossification of the various bones of thearm and hand can be found to give no aid in an attempt toelucidate the different deformities it is not here in place, andthe interested reader is referred to Minots embryology andQuains Anatomy. The different deformities of the hands are classified underthree heads. ( Nichols, in Reference Hand Book of MedicalSciences. Vol. IV. 1902.) ANOMALIES OF THE PHALANGES. 7 1. Those which depend on deficient development.Acheiria (absence of the hand), ectrodactylism (absence ofone or more digits), hypoplialangism (absence of one or morephalanges).

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FIGURE 5. 2. Excessive development. Polycheiria, polydactylism,polyphalangism. 3. Perverted development. Syndactylism, cleft hand,congenital constrictions, deflections, congenital dislocations,congenital neoplasms. 8 ANOMALIES OF THE PHALANGES. The coexistence of different types is common, such forinstance as the combination of syndactylism with anomaliesand deficiencies of the phalanges, which is the type illus-trated by the first group of cases to be presented in this

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1864

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