Talocalcaneal coalition

Abstract

With the 95% confidence interval and using the CT findings as the comparison we calculated the sensitivity, specificity, accuracy, and positive and negative predictive values for the C-sign, and for other signs known to be associated with TCC. Similarly, we also calculated the interobserver and intraobserver reliability for these signs using the kappa statistic.Our results suggest that the C-sign is highly sensitive and specific for TCC. It is an accurate indicator and significantly more reliable than other previously recognised radiological signs of TCC. Features of the C-sign, however, cannot be relied upon to indicate whether the TCC is fibrous or bony.

A 3-portal approach for arthroscopic subtalar arthrodesis

“… a Pre‐operative lateral radiographs of a female patient with a symptomatic talocalcaneal coalition. Note the presence of the C‐sign in the hindfoot [7]. b Immediate post‐operative radiograph.…”