Kinematic alteration in three-dimensional reaching movement in C3-4 level cervical myelopathy.

Object: This study aimed to compare the reaching movement between two different spinal cord compression level groups in cervical myelopathy (CM) patients.

Methods: Nine CM patients with maximal cord compression at the C3-4 level (C3-4 group) and 15 CM patients with maximal cord compression at the C4-7 level (C4-7 group) participated in the study. We monitored three-dimensional (3D) reaching movement using an electronic-mechanical whack-a-mole-type task pre-and post-operatively.