Morphometric magnetic resonance imaging study of the quadriceps tendon in hemodialysis patients: comparison with non-dialyzed controls.

Autor: Malta LMA; School of Medicine, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil., Lugon JR; School of Medicine, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil., Dos Santos AASMD; School of Medicine, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil., Machado LM; School of Medicine, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil.
Jazyk: angličtina
Zdroj: Radiologia brasileira [Radiol Bras] 2022 Sep-Oct; Vol. 55 (5), pp. 293-298.
DOI: 10.1590/0100-3984.2021.0144
Abstrakt: Objective: To evaluate the knees of individuals with renal failure who are on hemodialysis, using magnetic resonance imaging (MRI), comparing them with those of a group of individuals with normal renal function.
Materials and Methods: This was a cross-sectional, observational, controlled study conducted between August 2018 and February 2020. The cases consisted of 15 patients who had been on hemodialysis for ≥ 5 years and did not have a quadriceps tendon rupture. The controls consisted of 15 individuals with normal renal function who were matched (1:1) to the cases for sex, age, and physical activity level. The subjects in both groups underwent MRI of the right knee only.
Results: The mean ages of the cases and controls were 50 ± 15 years and 49 ± 14 years, respectively. The median time on hemodialysis was 11 years (range, 10-14 years). Serum levels of parathyroid hormone, ferritin, alkaline phosphatase, phosphorus, and creatinine were higher among the cases than among the controls, whereas serum albumin and hemoglobin were lower ( p < 0.05 for all). The MRI study showed a hyperintense signal in the quadriceps tendon in 11 of the cases and in three of the controls ( p = 0.009). Knee joint effusion was observed in nine of the cases and in three of the controls ( p < 0.05). The thickness, length, and width of the tendon did not differ between the groups. A hyperintense signal in the tendon was not associated with the time on hemodialysis; nor with the levels of intact parathyroid hormone, hemoglobin, or alkaline phosphatase.
Conclusion: Patients on chronic hemodialysis, even those without a tendon rupture, show a hyperintense signal in the quadriceps tendon on MRI.
Databáze: MEDLINE
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