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This project provides a full body model (MASI) for the analysis of cervical spine load, and rugby specific version of the same model (the Rugby Model) for the analysis of cervical spine injury mechanisms in rugby activities.

License: MASI - Healthy Subject, Rugby Forward Player Model

This project provides a full body model (MASI) for the analysis of cervical spine loading during a various set of activities. The MASI is an in silico representation of a healthy subject and includes:

i) a custom joint that allows scapula and clavicle coupled motion with respect to humeral elevation;
ii) full body inertial parameters for dynamic analyses;
iii) optimised neck muscle parameters representative of a healthy subject''''s neck strength.

Besides, we created a rugby-specify version of the MASI, which is called the ''''Rugby Model''''. The Rugby Model is created for the analysis of cervical spine load in rugby activities and other sports impacts involving upper body contacts.

The Rugby Model includes:
i) a refined estimation of model inertial properties from a DEXA scan of a front row rugby player;
ii) the inclusion of lower limbs in order to allow the simultaneous application of multiple external loads;
iii) neck kinematics from Vasavada Head&Neck model;
iv) scapula and clavicle coupled motion with respect to humeral elevation.

The model was optimised to provide the kinematics of the cervical spine and scapula-clavicular segments, with coupled joint motion relationships based on cadaveric data. The inclusion of inertial values from DEXA scans enabled inverse dynamics analysis and an improved scaling procedure based on rugby-specific participants.

The model can be used for dynamic analysis and simulation in order to:
a) calculate muscle lengths and moment arms, as well as the forces and moments around the cervical spine during rugby activities, such as scrummaging and tackles.
b) investigate cervical spine injury mechanisms during rugby scrummaging.

Further modelling developments will integrate MRI data into the construction of subject-specific models.

Downloads

Provides the MASI and Rugby Model (.osim) file that can be used in OpenSim.

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Related Projects

The project owner recommends the following other projects:

Head and Neck Musculoskeletal Biomechanics

Full body model for examination of head and neck movement

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