title: [Clinical auxiliary diagnosis value of high frequency ultrasonographic measurements of the thickness of transverse carpal ligaments in carpal tunnel syndrome patients].
abstract: To evaluate the meaning and value of high-frequency ultrasound in the diagnosis of carpal tunnel syndrome (CTS).
  
  
  
  In this study, 48 patients (unilateral hand) with CTS were analyzed. The thickness of transverse carpal ligaments at the pisiform bone was measured using high-frequency ultrasound. Open carpal tunnel release procedure was performed in the 48 CTS patients, and the thickness of transverse carpal ligaments at the hamate hook bone measured using vernier caliper under direct vision. The accuracy of thickness of transverse carpal ligaments was evaluated using high-frequency ultrasound. high-frequency ultrasound measurement of thickness of transverse carpal ligaments at the hamate hook bone and pisiform bone, and determination of the diagnostic threshold measurement index using receiver operating characteristic (ROC) curve, sensitivity and specificity were performed and the correlation between the thickness of transverse carpal ligaments and nerve conduction study (NCS) analyzed.
  
  
  
  The thickness of transverse carpal ligaments in the CTS patients were (0.42±0.08) cm (high-frequency ultrasound) and (0.41±0.06) cm (operation) at hamate hook bone, and there was no significant difference between the two ways (t=0.672, P>0.05). The optimal cut-off value of the transverse carpal ligaments at hamate hook bone was 0.385 cm, the sensitivity 0.775, and the specificity 0.788. The optimal cut-off value of the transverse carpal ligaments at the pisiform bone was 0.315 cm, the sensitivity 0.950, and the specificity 1.000. The transverse carpal ligaments thickness and wrist-index finger sensory nerve conduction velocity (SCV), wrist-middle finger SCV showed a negative correlation.
  
  
  
  High frequency ultrasound measurements of thickness of transverse carpal ligaments is a valuable method for the diagnosis of CTS.
authors.affiliation: Department of Hand and Foot Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai 264001, Shandong, China.
authors.forename: L
authors.initials: L
authors.lastname: Xu
authors.affiliation: Department of Hand and Foot Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai 264001, Shandong, China.
authors.forename: F M
authors.initials: FM
authors.lastname: Chen
authors.affiliation: Department of Hand and Foot Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai 264001, Shandong, China.
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Trauma and Orthopaedics, Peking University People's Hospital; Peking University Traffic Medicine Center, Beijing 100044, China.
authors.forename: P X
authors.initials: PX
authors.lastname: Zhang
authors.affiliation: Department of Hand and Foot Surgery, Yantai Yuhuangding Hospital, Yantai 264001, Shandong, China.
authors.forename: X R
authors.initials: XR
authors.lastname: Jiang
mesh_terms: D002349:Carpal Tunnel Syndrome / Q000000981:diagnostic imaging* / Q000601:surgery; D005385:Fingers; D006801:Humans; D008023:Ligaments, Articular / Q000000981:diagnostic imaging*; D012372:ROC Curve; D012680:Sensitivity and Specificity; D014463:Ultrasonography; D014955:Wrist Joint / Q000000981:diagnostic imaging