Lantz G C, Cantwell H D
J Am Vet Med Assoc. 1986 Jun 15;188(12):1403-5.
Intermittent open-mouth lower jaw locking was documented in 5 dogs. In contrast to what has been reported in other cases, pronounced radiographic abnormalities in the temporomandibular joints were not observed. In 4 of the dogs, locking episodes started at a later age (35 to 83.5 months) than had been reported by others (6 to 22 months). Duration and frequency of locking were variable. Lateral shifting of the jaw and lack of neurologic deficits indicated a temporomandibular joint abnormality. Excision of the rostroventral portion of the involved zygomatic arch prevented locking in all cases. This syndrome involves variable severity of temporomandibular joint dysplasia, which could account for the variable age of onset and random frequency of locking episodes.
5只犬出现间歇性开口下颌锁定情况。与其他病例报告不同的是，未观察到颞下颌关节明显的影像学异常。其中4只犬的锁定发作起始年龄（35至83.5个月）比其他报道的年龄（6至22个月）要晚。锁定的持续时间和频率各不相同。下颌侧向移位且无神经功能缺损提示颞下颌关节异常。切除受累颧弓的吻腹侧部分在所有病例中均防止了锁定。该综合征涉及颞下颌关节发育异常的不同严重程度，这可能解释了发作年龄的差异和锁定发作频率的随机性。
