1. Strain Ratio Measurements of Patellar and Achilles Tendons With Different Reference Regions in Healthy Volunteers
- Author
-
Nusret Ök, Semih Akkaya, Nuray Akkaya, Harun R. Gungor, and Kadir Agladioglu
- Subjects
Male ,elastography ,Acoustics and Ultrasonics ,Patellar Tendon ,Strain (injury) ,Tissue elasticity ,Fat pad ,Strain ratio ,030218 nuclear medicine & medical imaging ,Tendons ,human experiment ,Sonoelastography ,0302 clinical medicine ,Reference Values ,middle aged ,Healthy volunteers ,Ultrasonics ,Achilles Tendon/*physiology ,Adipose Tissue/physiology ,Adolescent ,Adult ,Aged ,Female ,Healthy Volunteers ,Humans ,Middle Aged ,Patellar Ligament/*physiology ,Ultrasonography/*methods ,Young Adult ,Ultrasonography ,Orthodontics ,Achilles tendon ,physician ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,ultrasound ,adult ,Ultrasound ,article ,musculoskeletal system ,adipose tissue ,Tendon ,aged ,female ,medicine.anatomical_structure ,rigidity ,Adipose Tissue ,patellar ligament ,young adult ,Medical imaging ,subcutaneous tissue ,Elastography ,Subcutaneous tissue ,musculoskeletal diseases ,Achilles tendons ,achilles tendon ,Biophysics ,volunteer ,Achilles Tendon ,03 medical and health sciences ,Patellar Ligament ,medicine ,Strain ratios ,controlled study ,Radiology, Nuclear Medicine and imaging ,human ,normal human ,procedures ,030203 arthritis & rheumatology ,business.industry ,echography ,reference value ,medicine.disease ,physiology ,infrapatellar fat pad ,business - Abstract
Strain ratio measurements of tendons vary because of the reference tissue selection. The main purpose of this study is to highlight, in detail, the numeric variability attributable to the use of various reference materials on strain ratio measurements of patellar and Achilles tendons. Measurements were performed at the proximal, middle and distal thirds of the patellar and Achilles tendons on the dominant site of healthy volunteers. A total of 3 references were used: the Hoffa's fat pad for the patellar tendon, the Kager's fat pad for the Achilles tendon, subcutaneous tissue and Aquaflex gel pads (Parker Laboratories, Fairfield, NJ, USA) for both tendons. Although the same methods were used by the same physician for each tendon site on repeated measurements, strain ratio values had numeric variability with various reference materials in each measurement. Therefore, comparison of numeric strain ratio results of various studies with various reference materials could confuse the clinical interpretations of these numeric data, and, using a reference material with standard stiffness like Aquaflex ultrasound gel pads, should be considered by verifying these results with further studies. © 2019 World Federation for Ultrasound in Medicine & Biology
- Published
- 2019