Abstract

BAZAN, Pedro L. et al. Utilidad de la medición de los músculos psoas y paraespinales mediante tomografía computarizada y resonancia magnética. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2023, vol.88, n.2, pp.132-137. ISSN 1852-7434.  http://dx.doi.org/https://doi.org/10.15417/issn.1852-7434.2023.88.2.1512.

Background: Sarcopenia is becoming increasingly significant in the research of various diseases to predict morbidity and mortality in the perioperative period. Objectives: The objectives of this study were to evaluate the efficacy of computed tomography and magnetic resonance imaging in measuring the psoas and paraspinal muscles and to compare these indexes with age, sex, and pathology. Materials and Methods: Computed tomography and magnetic resonance imaging of outpatients were used. Muscle measurements were taken at the L3 and L4 pedicles. Results: The study included 18 CT and 34 MRI scans. The patients were divided into groups based on their age range, which was 15 to 80 years. In the overall averages, males were above the global average in both studies. Regarding age ranges, it was observed that the first group (15-29 years) had a higher muscle volume and Hounsfield units in the psoas compared to the >60 age group. Patients consulting for spondylolisthesis had less muscle mass than those with discopathy. Conclusions: There is no difference between magnetic resonance imaging and computed tomography in measuring the paraspinal and psoas muscles. It is evident that the decrease in muscle volume is common in older patients and those with diseases that affect spinal balance.

Keywords : Sarcopenia; Hounsfied units; spine; psoas; multifidus; fat infiltration.

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