Aims and objectives
The Achilles tendon is the largest and strongest tendon in the human body and represets a conjoin terminal structure of the gastrocnemius and soleus muscles.
It plays an important role in foot plantar flexion and hindfoot inversion. The aim is to evaluate the accuracy of shear wave elastosonography in the study of the Achilles tendon.
Shear and strain wave methods have been compared in the diagnosis: strain wave is used daily to evaluate the elasticity of surface tissues.
Methods and materials
We analyzed tendons of 30 healty patients (15 men,
age 24-30 years),
with Toshiba Aplio 500 (linear probe: 5-14 MHz).
We studied the third medio-distal of the Achilles tendon to maximum flexion and extension,
according to the transverse axis of the tendon,
with both methods.
The exams have been done by the same expert radiologist.
Women's group values: 0.7545 in dorsiflexion and 1.095 in extension with strain,
comparing tendon structure and Kager adipose tisse.
9.803 kPa and 87.013 kPa using shear wave method.
Men's group values: 1.486 in dorsiflexion and 1.598 in extension with strain.
18.256 kPa and 101.005 kPa using shear wave.
The study on Achilles tendon flexed and in extension into two groups reveal that the correlation coefficient are statisticallu significant,
in both methods.
Values obtained >0.80 and <0.90...
Shear wave method is more effective in maximum flexion and extension.
Moreover men's values are higher than woman's values: this is probably due to a different fibrillar structure tendon due to physical exercising.
Shear wave method could be successfully used like gold standard not only for liver study,
but also for musculoskeletal system.
Further studies will enable the importance of shear wave method in the study of patients with disease.
Sun Y (2016) Elastic Characteristics of the Normal Achilles Tendon Assessed by Virtual Touch Imaging Quantification Shear Wave Elastography.
J Ultrasound Med 35:1881–1887. Normal 0 14 false false false IT JA X-NONE Gitto S,
Draghi F (2016) Sonography of the Achilles Tendon After Complete Rupture Repair: What the Radiologist Should Know.
J Ultrasound Med 35:2529–2536. Normal 0 14 false false false IT JA X-NONE DeWall RJ,