最近,对于指甲单位黑色素瘤,首选功能性或防腐性手术;然而,完全切除指甲,特别是矩阵,由于其复杂的结构而具有挑战性。本研究旨在通过超声检查测量重要指甲结构的距离。在这里,包括14例无指甲畸形的患者。从指甲角质层到远端指间关节的长度(距离X),伸肌的附着部分(距离A),到钉基质的中间近端(距离B),测量到指甲基质的侧向近端(距离C)。在轴向平面中,测量从指甲板最高点到远端指骨底部(距离Y)和到指甲板外侧尖端(距离D)的长度。在第一个指甲上,第三个手指甲,第一个脚趾甲,第三个脚趾甲,平均比率A:X,比率B:X,比率C:X,比率D:Y为78.6%,44.3%,57.2%,40.1%,和84.6%;55.9%,64.9%,40.2%,和66.4%;35.6%,50.8%,34.3%,和81.9%;和57.2%,59.6%,和31.7%,分别。指甲单位通常是肉眼看不见的;因此,这项研究将有助于确定切除的大致范围。
Recently, functional or preservative surgery has been preferred for nail unit melanoma; however, complete resection of the nail unit, particularly the matrix, is challenging because of its complex structure. This study aims to measure the distance of important nail structures through ultrasonography. Herein, 14 patients without nail deformity were included. The length from the nail cuticle to the distal interphalangeal joint (distance X), to the attachment part of the extensor muscle (distance A), to the median proximal end of the nail matrix (distance B), and to the lateral proximal end of the nail matrix (distance C) were measured. In the axial plane, the length from the highest point of the nail plate to the bottom of the distal phalanx (distance Y) and to the lateral tip of the nail plate (distance D) were measured. On the first fingernail, third fingernail, first toenail, and third toenail, the mean ratio A:X, ratio B:X, ratio C:X, and ratio D:Y were 78.6%, 44.3%, 57.2%, 40.1%, and 84.6%; 55.9%, 64.9%, 40.2%, and 66.4%; 35.6%, 50.8%, 34.3%, and 81.9%; and 57.2%, 59.6%, and 31.7%, respectively. Nail units are often invisible to the naked eye; thus, this study will help identify the approximate scope of excision.