Huang Wensu, Akashi Masaya, Nishio Takuro, Negi Noriyuki, Kimoto Akira, Hasegawa Takumi
Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Japan.
Department of Radiology, Kobe University Hospital, Kobe, Japan.
Oral Maxillofac Surg. 2020 Dec;24(4):515-520. doi: 10.1007/s10006-020-00876-1. Epub 2020 Jul 3.
Elongated mandibular coronoid process is a rare condition defined as enlargement of the coronoid process. The only useful way to treat the mouth-opening limitation is resection of the elongated coronoid process. Four-dimensional CT (4DCT; three spatial dimensions plus time axis) is a novel imaging technique. Its usefulness of for evaluation of dynamic movements such as joint motion has been reported. Here, we show the potential usefulness of 4DCT evaluation in a patient with elongated mandibular coronoid process.
A 59-year-old female who suffered from mouth-opening difficulty and pressure during mouth opening was referred to our department. Elongation of the right coronoid process was evident in a panoramic X-ray image. The mandibular movement and temporal muscle motility before and after coronoidectomy in this patient on 4DCT could be evaluated.
4DCT is useful in the diagnosis and surgical outcome of elongated coronoid process.
下颌冠突过长是一种罕见病症，定义为冠突增大。治疗张口受限的唯一有效方法是切除过长的冠突。四维CT（4DCT；三个空间维度加时间轴）是一种新型成像技术。其在评估诸如关节运动等动态运动方面的有用性已有报道。在此，我们展示了4DCT评估在下颌冠突过长患者中的潜在有用性。
一名59岁女性因张口困难及张口时疼痛前来我院就诊。全景X线片显示右侧冠突过长。通过4DCT可评估该患者在冠突切除术前及术后的下颌运动和颞肌运动。
4DCT在诊断及评估下颌冠突过长的手术效果方面具有重要作用。
