Klinghoffer L, Murdock M G, Hermel M B
Clin Orthop Relat Res. 1975 Jan-Feb(106):151-4. doi: 10.1097/00003086-197501000-00023.
X-ray evidence of an absent lumbar facet is usually considered to be indicative of the presence of an osteolytic bone lesion but on rate occasions may be due to a congenital anomaly. Two cases of the congenital absence of a lumbar superior articular facet suggest that this anomaly is not symptom-producing, and in one case was discovered incidentally in a patient without back pain yet led to the performance of a major surgical diagnostic operation. While, rare, a greater awareness of this condition, as clearly defined in the literature on the subject, might occasionally eliminate the need for a similar surgical procedure.
腰椎小关节缺如的X线证据通常被认为提示存在溶骨性骨病变，但偶尔也可能是先天性异常所致。两例先天性腰椎上关节突缺如的病例表明，这种异常不会产生症状，其中一例在一名无背痛的患者中偶然发现，却导致了一次大型外科诊断手术。虽然这种情况罕见，但正如该主题文献中明确界定的那样，对这种情况有更高的认识可能偶尔会消除进行类似外科手术的必要性。
