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患上唇裂的儿童口轮匝肌的功能障碍,能引起肌纤维适应性的结构改变。可借助一些方法来查明。不全唇裂时,代偿性的改建不仅涉及裂隙的边缘,并且也影响上唇两侧之间的“小桥”组织。本文的目的是借助肌测定法和超声立体测量法分析不同程度唇裂的“小桥”部横纹肌组织。材料和方法:20名6～10个月的患有不全唇裂的婴儿在行成形手术时切除的“小桥”部组织作为研究材料。第一组是患Ⅰ度唇裂(10名)修复时所切取的组织;第二组是从Ⅱ度唇裂(10名)修复时切取的组织。对照组为相同年龄和性别的无唇裂儿童的尸体材料。组织块用12%福尔马林固定,用石腊灌注。用苏木精伊红染色在切片上借目镜测
The dysfunction of the orbicularis oris muscle of a child suffering cleft lip can cause structural changes in the muscle fiber adaptability. Can use some methods to identify. In the absence of a cleft lip, compensatory alterations involve not only the edge of the crevice, but also “small bridges” between the two sides of the upper lip. The aim of this paper is to analyze the striated muscle of the “small bridges” at different degrees of cleft lip with the aid of muscle and ultrasound stereotactic methods. MATERIALS AND METHODS: Twenty “small bridges” tissues from 20 infants with incomplete cleft lip, which had been resected at the time of plastic surgery, were used as research materials. The first group consisted of tissues that had been harvested from patients with I degree cleft lip (10) and the second group from the cleft lip of grade II (10). The control group consisted of cadaveric material from children without cleft lip of the same age and gender. Tissue blocks were fixed with 12% formalin and perforated with paraffin. Stain with hematoxylin and eosin on the slice by eyepiece