Sonographic visibility of the sinus tarsi with a 12 MHz transducer.

Autor: Stella SM; Ospedale di Misericordia di Navacchio, via Ruschi 34, 56011 Calci, PI Italy., Ciampi B; Ospedale di Misericordia di Navacchio, Navacchio, Cascina, Pisa, Italy., Orsitto E; Radiologia D.E.A., A.O.U.P. Ospedale Cisanello Pisa, Pisa, Italy., Melchiorre D; Reumatologia Universitaria di Firenze, Ospedale Careggi Firenze, Florence, Italy., Lippolis PV; U.O. Chirurgia Generale e d'Urgenza, A.O.U.P., Ospedale Cisanello Pisa, Pisa, Italy ; Scuola SIUMB di Ecografia di Base e Specialistica in Urgenza ed Emergenza di Pisa, Pisa, Italy.
Jazyk: angličtina
Zdroj: Journal of ultrasound [J Ultrasound] 2014 Dec 13; Vol. 19 (2), pp. 107-13. Date of Electronic Publication: 2014 Dec 13 (Print Publication: 2016).
DOI: 10.1007/s40477-014-0145-y
Abstrakt: Objectives: To assess the value of ultrasonography in studies of the ligaments within the sinus tarsi (ST) in healthy subjects.
Materials and Methods: We examined 20 healthy volunteers using a 12-MHz transducer with THI and compound imaging. With the foot in inversion, the following structures were examined with coronal and transverse scans: (1) the root of the inferior extensor retinaculum (RIER); (2) the interosseous talocalcaneal ligament (ITCL); (3) the cervical ligament (CL); (4) the bifurcate ligament (BL); (5) the synovial recesses, which were examined for possible distention (distended synovial recesses, DSR). The sonographic features, orientation, and thickness of each ligament were assessed.
Results: The easiest structure to identify (visualized in 20/20 subjects) was the RIER, which formed a semiarch. The two deeper layers were hypoechoic, the superficial layer hyperechoic. The ITCL was situated posteriorly and deep with an oblique course. It appeared hypoechoic with a mean thickness of 4.06 mm ± 0.7. It was visualized in 18/20 (90 %) subjects. The CL (isoechoic/hyperechoic) was located more anteriorly at an intermediate depth. The orientation was almost vertical. It was visualized in 17/20 (85 %) subjects, with a mean thickness of 2.28 mm ± 0.34. The BL appeared hypoechoic. It was visualized in 19/20 (95 %) subjects with transverse (anterior end of the ST) and longitudinal scans. The calcaneonavicular and calcaneocuboid components displayed mean (SD) thicknesses of 2.09 mm ± 0.37 and 2.7 mm ± 0.32, respectively. The ITCL and RIER were visualized in the same scan as a semiarch. DSR was observed in 4/20 (20 %) subjects.
Conclusions: The present study shows that, in patients with suspected ST pathology, the anatomic structures that make up this recess can be adequately examined with ultrasonography performed with ordinary 12-MHz transducers.
Databáze: MEDLINE
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