Purpose: To assess the technical feasibility of contrast-enhanced ultrasound (CEUS) in the monitoring of non-infected long bone nonunion healing. Methods: Twenty-five patients (16 males; mean age: 40.4 ± 11.7) with long bone nonunion were treated using surgery and mesenchymal stem cells and platelet-rich plasma. They performed CEUS up to 15 days before, 7 days, 4 and 8 weeks after treatment. To categorize the angiogenesis around the fracture site, the microvascular blood flow from CEUS was classified into four categories, depending on the portion of the investigated area that was involved in the neovascularization process: grade 0 = 0%; grade 1 = 0–30%; grade 2 = 30–70%; grade 3 = 70–100%. Nonparametric Friedman and Wilcoxon statistics were used. Results: Before treatment, neovascularization was graded as 0 in 15/25 patients, as 1 in 10/25. Vascularity significantly increased over time (P < 0.001), namely: 1 (25th–75th percentile = 1–2) at 7 days; 2 (1–2) at 4 weeks; 3 (0–2) at 8 weeks. All patients but one showed early progressive increase in neovascularization well identified with CEUS at the fracture site. Conclusion: CEUS is a feasible method to monitor healing in patients with long bone nonunion.

Technical and clinical feasibility of contrast-enhanced ultrasound evaluation of long bone non-infected nonunion healing / S. Pozza, A. De Marchi, C. Albertin, D. Albano, G. Biino, D. Aloj, L.M. Sconfienza. - In: LA RADIOLOGIA MEDICA. - ISSN 0033-8362. - 123:9(2018 Sep), pp. 703-709. [10.1007/s11547-018-0902-7]

Technical and clinical feasibility of contrast-enhanced ultrasound evaluation of long bone non-infected nonunion healing

Biino, Ginevra;Sconfienza, Luca Maria
2018-09

Abstract

Purpose: To assess the technical feasibility of contrast-enhanced ultrasound (CEUS) in the monitoring of non-infected long bone nonunion healing. Methods: Twenty-five patients (16 males; mean age: 40.4 ± 11.7) with long bone nonunion were treated using surgery and mesenchymal stem cells and platelet-rich plasma. They performed CEUS up to 15 days before, 7 days, 4 and 8 weeks after treatment. To categorize the angiogenesis around the fracture site, the microvascular blood flow from CEUS was classified into four categories, depending on the portion of the investigated area that was involved in the neovascularization process: grade 0 = 0%; grade 1 = 0–30%; grade 2 = 30–70%; grade 3 = 70–100%. Nonparametric Friedman and Wilcoxon statistics were used. Results: Before treatment, neovascularization was graded as 0 in 15/25 patients, as 1 in 10/25. Vascularity significantly increased over time (P < 0.001), namely: 1 (25th–75th percentile = 1–2) at 7 days; 2 (1–2) at 4 weeks; 3 (0–2) at 8 weeks. All patients but one showed early progressive increase in neovascularization well identified with CEUS at the fracture site. Conclusion: CEUS is a feasible method to monitor healing in patients with long bone nonunion.
ultrasound; contrast-enhanced ultrasound; long bone nonunion; mesenchymal stem cells; platelet-rich plasma
Settore MED/36 - Diagnostica per Immagini e Radioterapia
LA RADIOLOGIA MEDICA
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/572944
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