Challenges in Kinetic-Kinematic Driven Musculoskeletal Subject-Specific Infant Modeling

• DOI: 10.3390/mca27030036
• Publication Date: 2022-04-24T01:39:45Z
• Authors: Yeram Lim; Tamara Chambers; Christine Walck; Safeer Siddicky; Erin Mannen; Victor Huayamave
• Keywords: Biomechanics; Inverse dynamics; Supine position; Motion Capture

Musculoskeletal computational models provide a non-invasive approach to investigate human movement biomechanics. These could be particularly useful for pediatric applications where in vivo and vitro biomechanical parameters are difficult or impossible examine using physical experiments alone. The objective was develop novel musculoskeletal subject-specific infant model hip joint biomechanics during cyclic leg movements. Experimental motion-capture marker data of supine-lying 2-month-old were placed on generic GAIT 2392 OpenSim model. After scaling the body segment anthropometric measurements center locations, inverse kinematics dynamics used estimate ranges motion moments. For left hip, maximum moment 0.975 Nm minimum 0.031 estimated at 34.6° 65.5° flexion, respectively. right 0.906 0.265 23.4° 66.5° Results showed agreement with reported values from literature. Further refinements validations needed establish normative dataset, which will important when investigating infants pathologies such as developmental dysplasia hip. This research represents first step longitudinal development that critically contribute our understanding growth year life.