New York Hand & Wrist Center of Lenox Hill, New York, NY, USA.
Department of Orthopaedic Surgery, Lenox Hill Hospital, New York, NY, USA.
J Hand Surg Asian Pac Vol. 2022 Apr;27(2):276-279. doi: 10.1142/S2424835522500369. Epub 2022 Mar 31.
The diagnosis of trigger finger (TF) in patients who do not demonstrate triggering at presentation can be challenging. We have been using a new test for TF - the Lenox Independent Flexion Test (LIFT). The aim of this study is to determine the sensitivity of LIFT in diagnosing TF. We hypothesise that LIFT will be more sensitive compared to the classic physical exam finding of triggering or locking with active range of motion (AROM). This is a prospective study of consecutive patients with TF over a 5-month period. Patients with the onset of trigger following trauma and trigger of the thumb were excluded. Patients were examined for tenderness over the first annular (A1) pulley, triggering or locking with AROM, and the LIFT was performed. A two-proportion test was used to determine whether the LIFT was more sensitive than triggering with AROM. The study included 85 patients with 118 TFs. The average age of patients was 63 years and the study included 49 women. There were 69, 49, 0 and 0 grade I, II, III and IV TF, respectively. 108 fingers (92%) had a history of catching or locking of the affected digit, 110 (93%) had tenderness over the A1 pulley, 49 (44%) had triggering or locking with AROM and 102 (91%) had a positive LIFT. The LIFT was found to be more sensitive when compared to triggering with AROM ( < .001). The LIFT is more sensitive than triggering with AROM in the diagnosis of trigger digits. This test is especially useful in the diagnosis of TF in patients who do not have triggering at presentation. Level III (Diagnostic).
扳机指（TF）患者在就诊时不出现扳机现象的诊断可能具有挑战性。我们一直在使用一种新的 TF 测试——Lenox 独立弯曲测试（LIFT）。本研究旨在确定 LIFT 在诊断 TF 中的敏感性。我们假设 LIFT 与主动活动范围（AROM）时的触发或锁定的经典体格检查发现相比将更敏感。这是一项连续患者的前瞻性研究，为期 5 个月。排除了创伤后出现扳机和拇指扳机的患者。对患者进行了第一环形（A1）滑囊压痛、AROM 时触发或锁定、LIFT 的检查。使用两比例检验来确定 LIFT 是否比 AROM 时的触发更敏感。本研究包括 85 例 118 例 TF 患者。患者的平均年龄为 63 岁，包括 49 名女性。分别有 69、49、0 和 0 级 I、II、III 和 IV TF。69 根手指（92%）有受影响手指的捕捉或锁定史，110 根手指（93%）有 A1 滑囊压痛，49 根手指（44%）有 AROM 时的触发或锁定，102 根手指（91%）有阳性 LIFT。与 AROM 时的触发相比，LIFT 更敏感（<0.001）。与 AROM 时的触发相比，LIFT 在诊断扳机指方面更敏感。该测试在诊断就诊时无扳机现象的 TF 患者时特别有用。III 级（诊断）。
