Department of Orthopedic Surgery, University of Oklahoma Health Sciences, Oklahoma City, Oklahoma, US.
Baylor College of Medicine, One Baylor Plaza, Houston, Texas, US.
J Hand Surg Asian Pac Vol. 2022 Feb;27(1):2-9. doi: 10.1142/S2424835522300018. Epub 2022 Feb 23.
Paediatric trigger-locked thumb (PT-LT) is a common paediatric thumb condition. It is an acquired flexion deformity of the interphalangeal joint because of a size mismatch between an enlarged flexor pollicis longus tendon and a stenotic oblique pulley. It may present clinically as paediatric locked thumb which is more common or infrequently as paediatric trigger thumb. Paediatric locked thumb is classified into two types based on the presence of metacarpophalangeal joint (MCPJ) hyperextension. Type I does not have MCPJ hyperextension, whereas type II is associated with MCPJ hyperextension. The treatment of PT-LT is determined by the patient's age, time of onset, presentation, and type. Treatment modalities are observation, splinting, therapy, or surgery. Surgery involves dividing the A1 pulley and, most importantly, part of the oblique pulley. V (Therapeutic).
小儿扳机指（PT-LT）是一种常见的小儿拇指疾病。它是由于增粗的拇长屈肌腱和狭窄的斜形滑车之间的大小不匹配，导致指间关节的获得性屈曲畸形。它在临床上可能表现为更常见的小儿锁定拇指，或不常见的小儿扳机拇指。小儿锁定拇指根据掌指关节（MCPJ）过伸的存在分为两种类型。I 型没有 MCPJ 过伸，而 II 型与 MCPJ 过伸有关。PT-LT 的治疗取决于患者的年龄、发病时间、表现和类型。治疗方法包括观察、夹板固定、治疗或手术。手术包括切断 A1 滑车，最重要的是切断斜形滑车的一部分。V（治疗）。
