Document Type : Original Article

Authors

1 iran university of medical science

2 Alborz university of medical sciences

3 Iran university of medical sciences

Abstract

background:
Cartilage diameter evaluation is critical for cartilage assessing .MRI is gold standard tool in cartilage evaluation .observational and analytical study was designed to answer this question: is there any relation between MRI and US in measuring cartilage thickness in the medial femoral condyle?
Methodology:
The study was done in Iran (Tehran) , radiology department at Rasole-Akram Hospital between March-May 2020.. sample size was 18 peoples.
Mean cartilage thicknesses of the left medial femoral cartilage was measured by T1 weighted MRI and ultrasound from transverse, anterior, middle, and posterior medial femoral regions in nine healthy females with a Mean ± Std Deviation as indicated below:
Thickness = 1.6 ± 0.04 m, Weight = 55.3 ± 4.3 kg, Age = 21.7 ± 0.8 years. Additionally, nine healthy males with Thickness = 1.80 ± 0.02 m, Weight = 78.6 ± 11.1 kg, Age = 22.4 ± 0.7 years .Pearson and Bland–Altman plots used for correlations and agreements..
Results:
Anterior longitudinal ultrasound thickness measures were significantly positively correlated with MRI anterior (r = .93, P=0.00001), transverse ultrasound with MRI anterior (r = .87 P=0.0369), middle longitudinal ultrasound with MRI anterior (r = .87 P=0.00002), and transvers ultrasound and MRI middle (r = .87 P=0.00001).
Agreement in all aspects was good expect between anterior longitudinal ultrasound and MRI posterior. There was good absolute agreement between corresponding measurements done by ultrasound and MRI.
Conclusions
These results suggest that ultrasound may be a good clinical tool to assess relative cartilage thickness in the medial femoral regions.

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