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- Title
Added Value of Shear Wave Elastography (SWE) for Evaluation of Patients with Plantar Fasciitis.
- Authors
Tantawy, Engy Fathy; Abo-warda, Mohamed Hamed; Metwally, Shorouk khaled; Nada, Mohamed Gamal
- Abstract
Background: Background: Plantar fasciitis is caused by degenerative changes and repetitive stress, and it is a common cause of heel pain. Ultrasound is a reliable diagnostic tool for PF, but not all patients exhibit changes on ultrasound, making additional techniques necessary. the plantar fascia mechanical properties can be assessed by Elastography, such as Strain elastography and shear wave elastography. Strain elastography is subjective and operatordependent, while shear wave elastography provides a quantitative measure of tissue stiffness. Method: This study is a case control that has been conducted on 30 PFis patients (clinically diagnosed) and 30 matched control healthy individuals with no pain. It aimed to determine the added value of elastography to B-Mode ultrasound in the PFis diagnosis in comparison with healthy people. PF thickness and SWE stiffness elasticity (Young's modulus in kPa and shear wave velocity in m/s) were measured 1 cm distally from the calcaneal insertion. Correlations with VAS, AOFAS and the 17-Italian Foot Function Index (17-FFI) were determined. Results: Plantar fasciitis can be significantly assessed by SWE velocity and elasticity. There is a negative correlation between plantar fascia thickness and both SWE velocity and elasticity. Mean SWV value in healthy subjects was 5.92 m/s and in patients 3.02 m/s with a mean stiffness value of 109.1 kPa and 49.35 kPa respectively (p < 0.001). For SWV a cut-off value of 4.1 m/s had a specificity of 100 % and sensitivity of 93.33%. For stiffness a cut-off value of 48.1 kPa had a specificity of 100% and sensitivity of 76.67%. The mean thickness of healthy fascias was 2.93 mm (range 1.8-3.7) compared to 5.25 mm (range 3.4-8.3) in plantar fasciitis (p < 0.001) with cut off value about 3.7 had a specificity of 100 % and sensitivity of 90%. Conclusion: Our study has proven that the diagnostic accuracy is improved by SWE compared to B-US and that the combination of BUS and SWE is a strong diagnostic tool in detection of PFis and may be helpful in diagnosing early cases.
- Subjects
PLANTAR fasciitis; SHEAR waves; ELASTOGRAPHY; YOUNG'S modulus; HEEL pain; SHEAR strain
- Publication
Zagazig University Medical Journal, 2024, Vol 30, p342
- ISSN
1110-1431
- Publication type
Article
- DOI
10.21608/ZUMJ.2023.198578.2762