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    Does Wrist Laxity Influence Three-Dimensional Carpal Bone Motion?

    Source: Journal of Biomechanical Engineering:;2018:;volume( 140 ):;issue: 004::page 41007
    Author:
    Best, Gordon M.
    ,
    Zec, Michelle L.
    ,
    Pichora, David R.
    ,
    Kamal, Robin N.
    ,
    Rainbow, Michael J.
    DOI: 10.1115/1.4038897
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Previous two-dimensional (2D) studies have shown that there is a spectrum of carpal mechanics that varies between row-type motion and column-type motion as a function of wrist laxity. More recent three-dimensional (3D) studies have suggested instead that carpal bone motion is consistent across individuals. The purpose of this study was to use 3D methods to determine whether carpal kinematics differ between stiffer wrists and wrists with higher laxity. Wrist laxity was quantified using a goniometer in ten subjects by measuring passive wrist flexion–extension (FE) range of motion (ROM). In vivo kinematics of subjects' scaphoid and lunate with respect to the radius were computed from computed tomography (CT) volume images in wrist radial and ulnar deviation positions. Scaphoid and lunate motion was defined as “column-type” if the bones flexed and extended during wrist radial–ulnar deviation (RUD), and “row-type” if the bones radial–ulnar deviated during wrist RUD. We found that through wrist RUD, the scaphoid primarily flexed and extended, but the scaphoids of subjects with decreased laxity had a larger component of RUD (R2 = 0.48, P < 0.05). We also determined that the posture of the scaphoid in the neutral wrist position predicts wrist radial deviation (RD) ROM (R2 = 0.46, P < 0.05). These results suggest that ligament laxity plays a role in affecting carpal bone motion of the proximal row throughout radial and ulnar deviation motions; however, other factors such as bone position may also affect motion. By developing a better understanding of normal carpal kinematics and how they are affected, this will help physicians provide patient-specific approaches to different wrist pathologies.
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      Does Wrist Laxity Influence Three-Dimensional Carpal Bone Motion?

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    contributor authorBest, Gordon M.
    contributor authorZec, Michelle L.
    contributor authorPichora, David R.
    contributor authorKamal, Robin N.
    contributor authorRainbow, Michael J.
    date accessioned2019-02-28T11:08:21Z
    date available2019-02-28T11:08:21Z
    date copyright2/5/2018 12:00:00 AM
    date issued2018
    identifier issn0148-0731
    identifier otherbio_140_04_041007.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4253088
    description abstractPrevious two-dimensional (2D) studies have shown that there is a spectrum of carpal mechanics that varies between row-type motion and column-type motion as a function of wrist laxity. More recent three-dimensional (3D) studies have suggested instead that carpal bone motion is consistent across individuals. The purpose of this study was to use 3D methods to determine whether carpal kinematics differ between stiffer wrists and wrists with higher laxity. Wrist laxity was quantified using a goniometer in ten subjects by measuring passive wrist flexion–extension (FE) range of motion (ROM). In vivo kinematics of subjects' scaphoid and lunate with respect to the radius were computed from computed tomography (CT) volume images in wrist radial and ulnar deviation positions. Scaphoid and lunate motion was defined as “column-type” if the bones flexed and extended during wrist radial–ulnar deviation (RUD), and “row-type” if the bones radial–ulnar deviated during wrist RUD. We found that through wrist RUD, the scaphoid primarily flexed and extended, but the scaphoids of subjects with decreased laxity had a larger component of RUD (R2 = 0.48, P < 0.05). We also determined that the posture of the scaphoid in the neutral wrist position predicts wrist radial deviation (RD) ROM (R2 = 0.46, P < 0.05). These results suggest that ligament laxity plays a role in affecting carpal bone motion of the proximal row throughout radial and ulnar deviation motions; however, other factors such as bone position may also affect motion. By developing a better understanding of normal carpal kinematics and how they are affected, this will help physicians provide patient-specific approaches to different wrist pathologies.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDoes Wrist Laxity Influence Three-Dimensional Carpal Bone Motion?
    typeJournal Paper
    journal volume140
    journal issue4
    journal titleJournal of Biomechanical Engineering
    identifier doi10.1115/1.4038897
    journal fristpage41007
    journal lastpage041007-9
    treeJournal of Biomechanical Engineering:;2018:;volume( 140 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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