Cleft-palate and hare-lip : the earlier operation on the palate / by Edmund Owen.

  • Owen, Edmund, 1847-1915.
Date:
1904
Catalogue details

Licence: Public Domain Mark

Credit: Cleft-palate and hare-lip : the earlier operation on the palate / by Edmund Owen. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    in, the deep parts of these processes duly join, whilst the superficial parts fail to do so, hare-lip exists without a palatine cleft. Varieties of Hare-lip.—A unilateral defect is oftener found beneath the left than the right nostril. It may be a mere notch, or it may be a fissure through the entire thick- ness of the lip, and very often it extends up into the nostril. Sometimes a small triangular gap is found at the border of the lip, continuous by its apex with a vertical linear cicatrix, as if Nature herself had attempted a plastic opera- tion with only partial success. In other cases there may be a small notch beneath each nostril, the child being found with a conspicuously marked prolabium. Or there may be a deep notch beneath each nostril, or a fissure into one nostril and a notch beneath the other. Or there may be a complete fissure through the lip up into each nostril, with isolation of the prolabium and the incisive bones on the tip of the nasal septum, as in Fig. 5. Lastly, in rare instances, however, the lateral fissure in the lip travels backwards in the hard palate to the spot at which the hinder end of the os incisivum touches the inter- maxillary suture. All these conditions are, of course, but varying degrees of arrested development. As a rule, each piece of a hare-lip is very closely con- nected with the gum by a strong fold of mucous membrane, which has to be freely dealt with at the operation for the repair of the lip (p. 90). Median Hare-lip.—It has just been shown that the descending fronto-nasal bud is marked in the middle line by a deep notch. As the process blends laterally with maxillary buds, this notch becomes gradually effaced, but