Lawson J P
Department of Diagnostic Imaging, Yale University School of Medicine, New Haven, Connecticut.
Orthop Clin North Am. 1990 Jul;21(3):483-95.
In contrast with the widely held view that radiologic normal variants are of no clinical significance, many of the anatomic variations of the skeletal system, may, in fact, be responsible for symptoms. Three groups of apparently normal variants are presented: Group 1 consist of ossicle that, from the very onset, may represent the sequelae of repetitious trauma; Group 2 is composed of normal variants in which the presence of congenital synchondrosis may predispose to injury from chronic repetitious trauma; Group 3 consists of ossicles that predispose to local and premature degenerative changes. Radionuclide bone scanning is crucial in evaluating the significance of the ossicles in the symptomatic patient.
与放射学正常变异无临床意义这一广泛观点相反，骨骼系统的许多解剖变异实际上可能导致症状。本文介绍了三组明显的正常变异：第一组由小骨组成，从一开始就可能代表重复性创伤的后遗症；第二组由正常变异组成，其中先天性软骨结合的存在可能易导致慢性重复性创伤引起的损伤；第三组由易导致局部和过早退变改变的小骨组成。放射性核素骨扫描对于评估有症状患者中小骨的意义至关重要。
