Variability of the helical axis during active cervical movements in people with chronic neck pain

Abstract

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Local and Widespread Pressure Pain Hyperalgesia Is Not Side Specific in Females with Unilateral Neck Pain that Can Be Reproduced during Passive Neck Rotation

“…Indeed, it is recommended to subgroup NSNP patients according to the presence or absence of movement associated pain and the type of movement where pain appears [21]. Neck rotation range of motion is associated with pain intensity in patients with neck pain [63], and NSNP patients show less variability of movement during rotation compared to the healthy controls [64]. Thus, we used pain during neck rotation as the main factor with which to group our sample participants.…”

Quaternions as a solution to determining the angular kinematics of human movement

“…This theorem means the description of the motion of a rigid body, or motion of one rigid body relative to another rigid body, can be the motion along and around a helical axis. The helical axes have been useful to describe joint behavior (e.g., [1]). The finite helical axis describes the motion of a rigid body from one position to another, and is frequently used as an approximation to the instantaneous helical axis (e.g., [2]).…”

Classifying neck pain status using scalar and functional biomechanical variables – development of a method using functional data boosting

“…anterior cruciate ligament injury [5], occupational back pain [6]). Yet, it is well established that individuals with neck pain have different movement patterns and muscle behaviours (collectively termed as biomechanical variables) than asymptomatic controls [7][8][9], which may not be restricted to the neck. For example, individuals with neck pain walked with reduced trunk axial rotation angle range compared to controls [7], which may be attributed to greater trunk muscular cocontraction, which could have negative consequences to overall spinal health [7].…”

“…Data for the present study represents the result of a sub-study from a larger project investigating the effects of neck pain on cervical motor control [8]. The study obtained ethical approval from the Ethics Committee of the University of Birmingham, UK (CM06/03/17-1).…”