Sonographic Wrist Measurements and Detection of Anatomical Features in Carpal Tunnel Syndrome
Figure 3
The internal carpal tunnel ratio (inner ratio) is plotted against the distal CSA. The squarer the carpal tunnel shape (numbers towards values of 1) and the higher the CSA value are, the more likely to have or to develop CTS. In male patients, the cutoff between patients and controls follows a distinct descending line (ROC area under the curve = 0.9235; CI 0.85 to 0.997, ) (a). In females the cutoff line is less distinct (ROC area under the curve = 0.7778; CI 0.63 to 0.93 ) (b). -squared values are in male patients: 0.039 and in controls: 0.004, in female patients: 0.024 and in female controls: 0.060.
