Vernet A B, Lopez-Sicilia S, Villas C
Arch Orthop Trauma Surg (1978). 1986;104(6):339-41. doi: 10.1007/BF00454426.
The so-called locked finger is a rarely reported condition that can be easily recognized when its typical picture is borne in mind: painful locking of a finger, making it impossible to fully extend the metacarpophalangeal joint, and a lateral displacement of the extensor tendon at this level. Radiological findings may include abnormal shape of the metacarpal head, free intra-articular bodies, sesamoid bones at the volar plate level and degenerative changes in the metacarpophalangeal joint. There is consistently a previous history of repeated light manual effort. This condition generally affects men, aged 50 or older. Two of the three cases presented (three of the four affected fingers) were successfully treated by means of gentle manipulation under regional nerve blocking. The patient who refused treatment remains with a painless locked finger 1 year later. There has been no recurrence with either of the two manipulated patients (three fingers).
所谓的“扳机指”是一种鲜有报道的病症，若记住其典型症状则很容易识别：手指疼痛性卡顿，导致掌指关节无法完全伸直，且在此水平伸肌腱出现侧向移位。影像学检查结果可能包括掌骨头形状异常、关节内游离体、掌板水平的籽骨以及掌指关节的退行性改变。患者通常有反复轻微手工劳作史。这种病症一般影响50岁及以上的男性。所呈现的3例病例中（4根受累手指中的3根），有2例通过局部神经阻滞下的轻柔手法复位成功治愈。拒绝治疗的患者1年后仍留有无痛性扳机指。接受手法复位的2例患者（3根手指）均未复发。
