Trapnell D H
Br J Radiol. 1977 Feb;50(590):97-100. doi: 10.1259/0007-1285-50-590-97.
A new sign which can be readily detected in a standard postero-anterior projection of the mandible is described. It indicates that there are fractures of both mandibular necks and the horizontal ramus near the mid-line. There do not appear to be any situations in which a false positive sign is produced.
描述了一种在标准下颌骨后前位投照中易于检测到的新体征。它表明下颌骨双侧颈部及中线附近水平支均有骨折。似乎不存在产生假阳性体征的情况。
