Posner M A, Langa V, Green S M
J Hand Surg Am. 1986 Mar;11(2):249-53. doi: 10.1016/s0363-5023(86)80063-6.
The locked metacarpophalangeal joint of a finger is an unusual condition frequently confused with a "trigger finger." The causes can be classified into degenerative and spontaneous groups. Ten cases are presented. The cause of locking of one patient in the degenerative group was gouty arthritis, a cause not previously reported in the literature. Although surgery is usually necessary, joint mobility was restored in 30% of the cases by distending the joint capsule with an intraarticular injection of a local anesthetic followed by gentle manipulation. In addition to routine x-ray films, arthrotomography was found to be a useful diagnostic technique in determining the cause of locking.
手指掌指关节绞锁是一种不常见的病症，常与“扳机指”相混淆。其病因可分为退行性和自发性两类。本文报告10例。退行性组中1例患者绞锁的病因是痛风性关节炎，这是文献中此前未报道过的病因。尽管通常需要手术治疗，但通过关节腔内注射局部麻醉剂扩张关节囊并随后轻柔手法操作，30%的病例恢复了关节活动度。除常规X线片外，关节断层摄影术被发现是确定绞锁病因的一种有用的诊断技术。
