In vivo three‐dimensional wrist motion analysis using magnetic resonance imaging and volume‐based registration

Abstract

This study represents a new attempt to non-invasively analyze three-dimensional motions of the wrist in vivo.A volume-based registration method using magnetic resonance imaging (MRI) was developed to avoid radiation exposure. The primary aim was to evaluate the accuracy of volume-based registration and compare it with surface-based registration. The secondary aim was to evaluate contributions of the scaphoid and lunate to global wrist motion during flexionxxtension motion (FEM), radio-ulnar deviation (RUD) and radial-extensiodulnoflexion, "dart-throwing'' motion (DTM) in the right wrists of 12 healthy volunteers. Volume-based registration displayed a mean rotation error of 1.29" k 1.03" and a mean translation error of 0.21 k 0'25mm and was significantly inore accurate than surface-based registration in rotation. Different patterns of contribution of the scaphoid and lunate were identified for FEM, RUD, and DTM. The scaphoid contributes predominantly in the radiocarpal joint during FEM, in the midcarpal joint during RUD and almost equally between these joints during DTM. The h a t e contributes almost equally in both joints during FEM and predominantly in the midcarpal joint during RUD and DTM.

Dynamics of wrist rotations

“…2 While translation does occur in the wrist joint (Patterson et al, 1998;Valero-Cuevas and Small, 1997), it has been shown to be small (Kaufmann et al, 2005;Kaufmann et al, 2006), indicating that FE and RUD are well approximated as being purely rotational DOFs. Many studies have shown that FE occurs slightly more proximal than RUD (Andrews and Youm, 1979;Brumbaugh et al, 1982;Goto et al, 2005;Kaufmann et al, 2005;Kaufmann et al, 2006;Leonard et al, 2005;Neu et al, 2001;Sommer and Miller, 1980). Therefore, the wrist joint can be described kinematically as a universal joint with nonintersecting axes (Fig.…”

Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging

“…Segmentation was defined as extracting vertebrae required for processing [1][2][3][4]. Contours of individual vertebrae in the neutral position were semi-automatically segmented from 3D MRI using intensity thresholding techniques.…”

“…Kinematic variables were measured by automatically superimposing segmented 3D MRI of the vertebrae in the neutral position over images for each position using this method of registration [1][2][3][4]. The correlation coefficient was used as a method of measuring similarity of voxel values for registration.…”

“…To analyze in vivo 3D kinematics more accurately, we developed a novel 3D motion analysis system using 3D magnetic resonance imaging (MRI). Our colleagues have already reported in vivo 3D kinematics of the cervical spine and wrist joint using this original method [1][2][3][4]. In addition to these studies, in vivo 3D intervertebral motions of the normal lumbar spine in various trunk motions have also been under investigation.…”

Simulation of extension, radial and ulnar deviation of the wrist with a rigid body spring model

“…Studies of carpal kinematics in vitro (Kobayashi et al, 1997;Patterson et al, 1998;Werner et al, 2004) and in vivo (Crisco et al, 2003;Moojen et al, 2002;Neu et al, 2001;Sun et al, 2000;Wolfe et al, 2000;Goto et al, 2005) provide useful descriptive data, but do not provide predictions of performance. Computational wrist modeling, including rigid body spring models (RBSM) (Genda and Horii, 2000;Iwasaki et al, 1998;Manal et al, 2002;Schuind et al, 1995) for kinematics and finite element (FE) studies (Carrigan et al, 2003) for stress distributions under static loads have constrained the wrist to neutral or functional (grip maneuver) postures.…”