Effects of muscle quantity and bone mineral density on injury and outcomes in older adult motor vehicle crash occupants.

ABSTRACT: Objectives: Quantify the independent and combined effects of abdominal muscle quantity and lumbar bone mineral density (BMD) on injury risk and in-hospital outcomes in severely injured motor vehicle crash (MVC) occupants ages 50 and older.Methods: Skeletal muscle area measurements of MVC occupants were obtained through semi-automated segmentation of an axial computed tomography (CT) slice at the L3 vertebra. An occupant height-normalized Skeletal Muscle Index (SMI) was calculated - a defining metric of sarcopenia and low muscle mass (sarcopenia thresholds: <38.5 cm²/m² females; <52.4 cm²/m² males). Lumbar BMD was obtained using a validated, phantomless CT calibration method (osteopenia threshold: <145 mg/cm³). SMI and BMD

SUBMITTER: Armstrong W 

PROVIDER: S-EPMC9839521 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature