title: Impact of scapholunate dissociation on human wrist kinematics.
abstract: Neither the complex motions of the scapholunate joint, nor the kinematic changes that occur as a result of injury to it, are fully understood. We used electromagnetic tracking within affected bones to evaluate the physiologic motions in the planes of flexion and extension, and of radial and ulnar deviation of human cadaver wrists, before and after complete transection of the scapholunate ligaments. Despite individual variance between each wrist, we were able to establish a pattern in the changes that occurred after scapholunate ligament injury. During the motions examined, the scaphoid showed an increase in translational deviation in almost all motion axes. In contrast, the movement of the lunate seemed to be impaired, especially in radial-ulnar deviation.
authors: 1 Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Aachen, Germany.
authors: J P
authors: JP
authors: Stromps
authors: 2 Chair of Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany.|3 Department of Orthopedic Surgery, University Hospital RWTH Aachen, Aachen, Germany.
authors: J
authors: J
authors: Eschweiler
authors: 4 Department of Orthopedic Trauma, University Hospital RWTH Aachen, Aachen, Germany.
authors: M
authors: M
authors: Knobe
authors: 1 Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Aachen, Germany.
authors: H O
authors: HO
authors: Rennekampff
authors: 2 Chair of Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany.
authors: K
authors: K
authors: Radermacher
authors: 1 Department of Plastic Surgery, Hand Surgery, Burn Center, University Hospital RWTH Aachen, Aachen, Germany.
authors: N
authors: N
authors: Pallua
mesh_terms: D002102:Cadaver; D050824:Carpal Joints / Q000503:physiopathology*; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology*; D008023:Ligaments, Articular / Q000503:physiopathology*; D012667:Lunate Bone / Q000503:physiopathology*; D016059:Range of Motion, Articular / Q000502:physiology*; D021361:Scaphoid Bone / Q000503:physiopathology*; D016474:Weight-Bearing
keywords: Scapholunate ligament; dorsal intercalated segment instability (DISI); scapholunate advanced collapse; scapholunate instability; scapholunate lesion