Development of an Anatomical Wrist Joint Coordinate System to Quantify Motion During Functional Tasks

in Journal of Applied Biomechanics

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Howard J. HillstromHospital for Special Surgery

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Rohit GargHospital for Special Surgery

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Andrew KraszewskiHospital for Special Surgery

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Mark LenhoffHospital for Special Surgery

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Timothy CarterSUNY Downstate Medical Center;

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Sherry I. BackusHospital for Special Surgery

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Aviva WolffHospital for Special Surgery

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Grigory SyrkinMontefiore Medical Center

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Richard ChengDartmouth College

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Scott W. WolfeHospital for Special Surgery
Cornell University

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The purpose of this study was to develop a three-dimensional (3D) motion analysis based anatomical wrist joint coordinate system for measurement of in-vivo wrist kinematics. The convergent validity and reliability of the 3D motion analysis implementation was quantified and compared with manual and electrogoniometry techniques on 10 cadaveric specimens. Fluoroscopic measurements were used as the reference. The 3D motion analysis measurements (mean absolute difference [MAD] = 3.6°) were significantly less different (P < .005) than manual goniometry (MAD = 5.7°) but not (P = .066, power = 0.45) electrogoniometry (MAD = 5.0°) compared with fluoroscopy. The intraclass correlation coefficient (ICC[2,1]) was highest for 3D motion analysis compared with manual and electrogoniometry, suggesting better reliability for this technique. To demonstrate the utility of this new wrist joint coordinate system, normative data from 10 healthy subjects was obtained while throwing a dart.

Howard J. Hillstrom, Andrew Kraszewski, Mark Lenhoff, Sherry I. Backus, and Aviva Wolff are with The Leon Root, M.D. Motion Analysis Laboratory at the Hospital for Special Surgery in New York, NY. Rohit Garg and Scott W. Wolfe are with the Hand and Upper Extremity Service at the Hospital for Special Surgery in New York, NY. Wolfe is also with the Department of Orthopaedic Surgery at Weill Cornell Medical College of Cornell University in New York, NY. Timothy Carter is with SUNY Downstate Medical Center in Brooklyn, NY. Grigory Syrkin is with the Department of Surgery at Montefiore Medical Center, North Division in Bronx, NY. Richard Cheng is with the Geisel School of Medicine at Dartmouth College in Hanover, NH.

Address author correspondence to Howard J. Hillstrom at hillstromh@hss.edu.
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