title: Subject-Specific Carpal Ligament Elongation in Extreme Positions, Grip, and the Dart Thrower's Motion.
abstract: This study examined whether the radiocarpal and dorsal capsular ligaments limit end-range wrist motion or remain strained during midrange wrist motion. Fibers of these ligaments were modeled in the wrists of 12 subjects over multiple wrist positions that reflect high demand tasks and the dart thrower's motion. We found that many of the volar and dorsal ligaments were within 5% of their maximum length throughout the range of wrist motion. Our finding of wrist ligament recruitment during midrange and end-range wrist motion helps to explain the complex but remarkably similar intersubject patterns of carpal motion.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Rainbow
authors.forename: Robin N
authors.initials: RN
authors.lastname: Kamal
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Moore
authors.forename: Edward
authors.initials: E
authors.lastname: Akelman
authors.forename: Scott W
authors.initials: SW
authors.lastname: Wolfe
authors.forename: Joseph J
authors.initials: JJ
authors.lastname: Crisco
mesh_terms: D000328:Adult; D050824:Carpal Joints / Q000000981:diagnostic imaging / Q000502:physiology*; D005260:Female; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008023:Ligaments, Articular / Q000000981:diagnostic imaging / Q000502:physiology*; D008297:Male; D008954:Models, Biological; D009068:Movement; D016059:Range of Motion, Articular; D014057:Tomography, X-Ray Computed; D014953:Wrist / Q000000981:diagnostic imaging / Q000502:physiology