Head and neck full motion testing system

A device for diagnosing cervical spine dysfunction of a head of a person, comprising:

• a main frame having a plurality of arms for maintaining the head of the person in a position, each arm of the plurality of arms is disposed within a common plane, and each arm of the plurality of arms further includes at least one pad configured to hold the head of the person within the device;
• a torsion system comprising an input shaft configured to selectively couple between a first position and a second position on at least one arm of the plurality of arms, and each arm of the plurality of arms includes a T-slot configured to selectively receive the input shaft of the torsion system;
• and
• an isokinetic dynamometer coupled to the torsion system via the input shaft, the isokinetic dynamometer configured to measure motion and torque;
• and
• a head positioning device configured to be worn on the head of the person and removably attached to the main frame, the head positioning device including at least one adjustment device configured to secure the head positioning device to the head of the person, thereby maintaining alignment of the head within the device, and a plurality of mating attachment devices, the plurality of mating attachment devices coupling the head positioning device to the main frame.