Table 1.
Participants’ demographic data and inventory scores.
Table 2.
Inclusion/exclusion criteria.
Table 3.
Compressed levels in the Cervical Compressive Myelopathy (CCM) group.
Fig 1.
The grip and release motion during measurement, and the fixed positions of the sensors.
(a) A grip and release cycle (extension to full flexion to extension) is shown. (b) The left panel shows the position of the sensors on the index and little fingers and the third metacarpal head. The right panel shows the direction of the angular velocity around the lateral-axis of the sensor.
Fig 2.
The detection methods of the kinematic parameters.
(a) The upper panel shows a typical waveform of angular velocity of the index finger in a patient with cervical compressive myelopathy. The lower panel includes an illustration of the detection methods of the number of cycles, the switching time-delay, the time per cycle, and the peak angular velocity. (b) The upper figure shows a waveform of the angle in the same patient shown in Fig 2A. The lower panel includes an illustration of the detection method of the angle change. Abbreviations: Deg- degree; Ext- extension; Flex- flexion; Sec- section.
Fig 3.
Typical waveforms of the angular velocity during the grip and release test in a patient in the severe CCM group and a participant in the age-matched control group.
The left panel shows the angular velocity of the right fingers and wrist of a 73-year-old male patient in the severe CCM group with a JOA score of 7.5. The right panel shows the angular velocity of the right fingers and wrist of a 72-year-old female participant in the age-matched control group with a JOA score of 17. Abbreviations: CCM- cervical compressive myelopathy; Deg- degree; Ext- extension; Flex- flexion; JOA- Japanese Orthopaedic Association.
Table 4.
Angle change.
Table 5.
Kinematic parameters during the GRT.