Abstract
Scapholunate ligament lesion is the most common ligament lesion in the wrist. We assessed the reliability of sonography in detecting it during Watson test. Twenty patients with scapholunate ligament lesion confirmed on MRI and intraoperatively were assessed preoperatively between July 2020 and April 2023. Sonography was performed on the scaphoid dorsal subluxation in wrist neutral and during Watson test and compared with the healthy contralateral side. Dorsal subluxation was measured by two independent investigators and intra- and inter-observer reliability were assessed. We found a significant difference between dorsal subluxation of the scaphoid in the healthy (0.89 mm, SD 0.67 mm) compared to the pathological side (1.67 mm, SD 0.95 mm). Reliability was very good and the standard error of measurement was less than 0.4 mm for all measurements. Sonography during Watson test demonstrated high reliability in diagnosing scapholunate lesions. Level of evidenceIII.
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