title: Real-time sonoelastography of the quadriceps tendon in patients undergoing chronic hemodialysis.
abstract: OBJECTIVE
  This study aimed to compare sonoelastographic findings for the quadriceps tendon in patients with chronic renal failure who were in a dialysis program to findings in a control group.
  
  
  METHODS
  Fifty-three randomly allocated patients (mean age, 54.3 years; range, 27-86 years) with chronic renal failure who were in a dialysis program 3 days a week between January and May 2012 were included. The measurements were performed in both knees of 53 patients undergoing dialysis and 25 individuals in the control group. The tendons were classified as follows: type 1, very stiff tissue (blue); type 2, stiff tissue (blue-green); and type 3, intermediate tissue (green-yellow) according to color mapping.
  
  
  RESULTS
  The mean quadriceps tendon thicknesses in the patient group were 4.9 mm (range, 1.9-6.5 mm) for the right knee and 4.9 mm (1.4-6.5 mm) for the left knee; the values in the control group were 5.4 mm (3.6-7.0 mm) for the right knee and 5.4 mm (3.4-7.0 mm) for the left knee. The mean elasticity scores in the patient group were 3.14 (1.03-5.23) for the right knee and 3.33 (1.29-5.00) for the left knee; in the control group, the values were 3.79 (1.73-5.23) and 3.69 (1.23-5.53) for the right and left knees, respectively (right knee, P = .025; left knee, P = .018; Mann-Whitney U test). The quadriceps tendons were significantly thinner in the patient group (right knee, P = .054; left knee, P = .015; Mann-Whitney U test).
  
  
  CONCLUSIONS
  Quadriceps tendons in patients with chronic renal failure are thinner and have lower elasticity scores compared to controls.
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey. drteberma@hotmail.com.
authors: Mehmet A
authors: MA
authors: Teber
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey.
authors: Törel
authors: T
authors: Oğur
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey.
authors: Alper
authors: A
authors: Bozkurt
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey.
authors: Bülent
authors: B
authors: Er
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey.
authors: Aynur
authors: A
authors: Turan
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey.
authors: Mutlu
authors: M
authors: Gülbay
authors: Departments of Radiology (M.A.T., T.O., A.B., A.T., M.G.) and Nephrology (B.E., İ.A.), Etlik Ihtisas Training and Research Hospital, Etlik, Ankara, Turkey.
authors: İbrahim
authors: İ
authors: Akdağ
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D054459:Elasticity Imaging Techniques; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D017847:Patellar Ligament / Q000000981:diagnostic imaging* / Q000473:pathology*; D006435:Renal Dialysis
keywords: chronic renal failure; hemodialysis; musculoskeletal ultrasound; quadriceps tendon; sonoelastography