Sonoelastographic Assessment of the Achilles Tendon in Familial Mediterranean Fever Patients: Comparison With Healthy Subjects

Introduction and objective This study aims at using sonoelastography as a novel technique to evaluate the stiffness and thickness of Achilles tendons in familial Mediterranean fever (FMF) patients. Methods Achilles tendons of 26 FMF patients and 23 control subjects were assessed with ultrasound and real-time sonoelastography. The Achilles tendons were divided into the distal, middle, and proximal thirds for elastographic image evaluation. Tendons were classified into three main types according to their elasticity features: grade 1 blue (hardest tissue) to green (hard tissue); grade 2, yellow (soft tissue); and grade 3, red (softest tissue). Tendons of the groups were compared in terms of thickness and stiffness. Results There were no significant differences in thickness and stiffness of the Achilles tendon between FMF patients and controls (p>0.05). Sonoelastography of Achilles tendons of FMF patients displayed no relationship between FMF and tendinopathy. Conclusion: This issue should be explored in prospective studies in larger groups.