Ultrasound Shear Wave Elastography of the Arch-Supporting Structures in Symptomatic Flatfoot: A Pilot Study

The posterior tibial tendon (PTT), deltoid ligament, and spring ligament are often torn or attenuated in patients with progressive collapsing foot deformity. The goal of this pilot study was to measure the ultrasound shear wave velocity (SWV) of these arch-supporting structures in feet with varying...

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Bibliographic Details
Published in:	Foot & ankle orthopaedics Vol. 9; no. 4; p. 24730114241281894
Main Authors:	Latt, L Daniel, Kim, Wonsuk, Caruso, Chelsea C, Krupinski, Elizabeth A, Zuniga, Andres Angel Nuncio, Syal, Amit, Taljanovic, Mihra S
Format:	Journal Article
Language:	English
Published:	United States SAGE Publications 01-10-2024 SAGE Publishing
Subjects:	shear wave velocity spring ligament adult acquired flatfoot deformity elastography posterior tibial tendon progressive collapsing foot deformity
Online Access:	Get full text
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Summary:	The posterior tibial tendon (PTT), deltoid ligament, and spring ligament are often torn or attenuated in patients with progressive collapsing foot deformity. The goal of this pilot study was to measure the ultrasound shear wave velocity (SWV) of these arch-supporting structures in feet with varying degrees of deformity to improve our understanding of their role in the progression of deformity. Two observers measured the SWV of the supramalleolar and inframalleolar PTT in long and short axes, in the tibiospring portion of the deltoid ligament, and in the superomedial band of the spring ligament in 8 neutrally aligned feet, 5 asymptomatic flatfeet, and 7 symptomatic flatfeet. Each measurement was repeated 3 times both with and without an applied eversion stress. Average SWV was lower at all locations in the symptomatic flatfeet compared with normal feet, but these differences were statistically significant only for the inframalleolar PTT and the spring ligament. Externally applied stress led to an increase in the SWV of the ligaments but a paradoxical decrease in the SWV in the supramalleolar PTT. The SWV of the PTT was lower along the short axis compared with the long axis. SWV may be useful in evaluating the severity of degenerative disease of arch-supporting structures, but further study is needed before this technique can be applied clinically. Level III, case-control study.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2473-0114 2473-0114
DOI:	10.1177/24730114241281894