Author/Authors :
Rubens da Costa Fontenelle, César Universidade Federal do Rio de Janeiro - Hospital Universitário Clementino Fraga Filho - Orthopedic Trauma Service, Rio de Janeiro, RJ, Brazil , Schiefer, Márcio Universidade Federal do Rio de Janeiro - Department of Orthopedics and Traumatology - Medical School, Rio de Janeiro, RJ, Brazil. , Mannarino, Pietro Universidade Federal do Rio de Janeiro - Hospital Universitário Clementino Fraga Filho - Orthopedic Trauma Service, Rio de Janeiro, RJ, Brazil , Borges Lacerda, Isac Universidade Federal do Rio de Janeiro - Hospital Universitário Clementino Fraga Filho - Orthopedic Trauma Service, Rio de Janeiro, RJ, Brazil , José Thomé Machado, Francisco Universidade Federal do Rio de Janeiro - Hospital Universitário Clementino Fraga Filho - Orthopedic Trauma Service, Rio de Janeiro, RJ, Brazil , Gonçalves dos Santos Farias, Raphael Universidade Federal do Rio de Janeiro - Hospital Universitário Clementino Fraga Filho - Orthopedic Trauma Service, Rio de Janeiro, RJ, Brazil , Bastos de Oliveira, Viviane Universidade Federal do Rio de Janeiro - Biomed Engineering Program, Rio de Janeiro, RJ, Brazi , Fernandes de Oliveira, Liliam Universidade Federal do Rio de Janeiro - Biomed Engineering Program, Rio de Janeiro, RJ, Brazi
Abstract :
Objective: To compare the mechanical properties of the supraspinatus
tendon in different age groups using Supersonic Shearwave Imaging
(SSI) elastography. Methods: We evaluated 38 healthy individuals of
both genders, 20 being in the range of 20 to 35 years and 18 being
over 60 years. The shear modulus of the supraspinatus tendon was
measured by SSI elastography, always on the right side. Means
between age groups were compared and statistically analyzed
using the Shapiro-Wilk normality test followed by the student’s t-test
and were established as a statistically significant value of p ≤ 0.05.
Results: A statistically significant difference was observed when
the mean values of the shear modulus of the supraspinatus tendon
of young adults (23.98 ± 9.94 KpA) were compared with those of
older adults (17.92 ± 6.17 KpA). Conclusion: We found a difference
between the means of the shear modulus measured by the SSI
elastography, showing a significant decrease of the shear modulus
with the chronological age progression. Level of Evidence III,
Diagnostic Studies – Investigating a Diagnostic Test.
Keywords :
Rotator Cuff , Shear Strength , Aging , Elasticity Imaging Techniques , Diagnostic Imaging
