PDF(Pubmed)
Abstract：
Avascular necrosis (AVN) of the femoral head following slipped capital femoral epiphysis (SCFE) is a serious complication that often leads to a permanent disability. Radiological findings of AVN may take up to two years to become apparent. This means painful waiting for children, parents, and treating teams. We would like to describe a new radiological sign that we noted in four patients. The sign has been named as the crescent moon sign or eid crescent sign. It may become visible as early as six weeks following surgery, and it carries a good prognosis that the femoral head is viable and will not develop AVN. Two out of the four patients were treated in our hospital by Ganz surgical dislocation. The other two patients had been featured in other publications, but the significance of the moon crescent signs, which were present, was not recognized or appreciated. All four patients did not develop AVN. A relatively similar radiological sign has been described in talus bone fractures (Hawkins\' sign). Like SCFE, talus bone fractures have a high AVN rate. Both, the crescent moon sign and Hawkins\' sign carry a good prognosis and indicate that the bone blood supply is restored.
摘要：
滑脱后股骨头坏死（AVN）是严重的并发症，通常会导致永久性残疾。AVN的放射学发现可能需要长达两年的时间才能变得明显。这意味着痛苦的等待孩子，父母,对待团队。我们想描述我们在四名患者中注意到的一种新的放射学体征。该标志被称为新月标志或开斋节新月标志。它最早可能在手术后六周变得可见，它具有良好的预后，即股骨头是可行的，不会发生AVN。四名患者中有两名在我院接受了Ganz手术脱位治疗。另外两名患者在其他出版物中有所报道，但是月球新月标志的意义，存在的，不被认可或赞赏。所有4例患者均未发生AVN。距骨骨折（Hawkins标志）中描述了相对相似的放射学标志。像SCFE,距骨骨折有较高的AVN率。两者,新月征和霍金斯征预后良好，表明骨骼血液供应恢复。
