{
  "abstract": "Please confirm that an ethics committee approval has been applied for or granted: Yes: I’m uploading the Ethics Committee Approval as a PDF file with this abstract submissionBackground and Aims The cross-sectional area (CSA) of the carpal tunnel constitutes a critical morphological feature for assessing median nerve compression in carpal tunnel syndrome (CTS). However, research investigating the anatomical characteristics of individual carpal bones in relation to CTS remains limited. Thus, this study aimed to examine the relationship between carpal bone CSA and CTS, hypothesizing that these measurements may serve as valuable diagnostic markers for CTS.Methods CSA measurements were obtained from 25 patients with CTS (six males, 19 females) and 29 healthy controls (five males, 24 females) who underwent wrist magnetic resonance imaging as part of routine health screening. The CSA of each carpal bone—hamate, capitate, trapezoid, and trapezium—was assessed at the hook of the hamate level using a picture archiving and communication system.Results The CTS group exhibited statistically significant increases in the CSA of the hamate, capitate, trapezoid, and trapezium bones compared with the control group (p < 0.05). Receiver operating characteristic (ROC) curve analysis revealed the following optimal cut-off values: hamate, 84.0% sensitivity and 82.8% specificity; capitate, 68.0% sensitivity and 69.0% specificity; trapezoid, 72.0% sensitivity and 72.4% specificity; and trapezium, 72.0% sensitivity and 72.4% specificity.Conclusions While the CSAs of all four carpal bones are significantly related to CTS, the hamate CSA is the most sensitive diagnostic measure. Clinicians are encouraged to prioritize hamate bone CSA evaluation when assessing patients for CTS.Abstract P081 Figure 1Axial T1-weighted magnetic resonance images of the carpal tunnel syndrome and cross-sectional area (CSA) of the carpal bones measured at the level of the hook of the hamate. CSA, cross-sectional areaAbstract P081 Figure 2Receiver operating characteristic (ROC) curve of the cross-sectional areas of hamate, capitate, trapezoid, and trapezium for prediction of carpal tunnel syndrome (CTS). ROC curve analysis was performed to determine the validity of the cross-sectional areas (CSAs) of the hamate, capitate, trapezoid, and trapezium as predictors of CTS. It demonstrated that the best cut-off point of hamate is 177.93 mm2, which had 84.0% sensitivity, 82.8% specificity; capitate is 151.31 mm2, which had 68.0% sensitivity, 69.0% specificity; trapezoid is 119.19 mm2 which had 72.0% sensitivity, 72.4% specificity; and trapezium is 138.01 mm2 which had 72.0% sensitivity, 72.4% specificity. Hamate AUC (95% CI) = 0.91 (0.83–0.98) Capitate AUC (95% CI) = 0.71 (0.56–0.86) Trapezoid AUC (95% CI) = 0.77 (0.64–0.91) Trapezium AUC (95% CI) = 0.82 (0.71–0.93) AUC, area under the curve; CSA, cross-sectional area; CTS, carpal tunnel syndrome; CI. confidence interval",
  "authors": [
    {
      "affiliations": [
        "International St. Mary Hospital, 서구, Republic of Korea"
      ],
      "name": "Jae Ni Jang"
    },
    {
      "affiliations": [
        "Anesthesiology and Pain Medicine, International St. Mary`s Hospital, Incheon, Republic of Korea"
      ],
      "name": "Young Uk Kim"
    }
  ],
  "title": "P081 Cross-sectional area of hamate bone as a diagnostic adjunct for carpal tunnel syndrome",
  "uid": "231fe93f-a455-5a9b-b499-13bb81efa782"
}