0
JBJS Classics   |    
Traumatic Instability of the Wrist Diagnosis, Classification, and Pathomechanics
Ronald L. Linscheid, MD; James H. Dobyns, MD; John W. Beabout, MD; Richard S. Bryan, MD
View Disclosures and Other Information
From the Mayo Clinic and Mayo Foundation, Rochester, Minnesota
Appeared in JBJS, Vol. 54-A, No. 8, pp. 1612-32, December 1972

J Bone Joint Surg Am, 2002 Jan 01;84(1):142-142
5 Recommendations (Recommend) | 3 Comments | Saved by 3 Users Save Case

Extract

The scaphoid is a mechanical link that stabilizes the intercarpal joint during motions of the wrist. Without this stability the proximal carpal row acts as an unsupported intercalated link in a three-link system and zigzag collapse occurs with axial loading. A deformity with dorsiflexion of the lunate within the linkage (dorsiflexion instability) occurs commonly after scaphoid fracture and scapholunate dissociation. When dissociation occurs the scaphoid assumes a vertical position, that is, the angle formed by the longitudinal axes of the scaphoid and lunate approaches a right angle. Rupture of the distal ­attachments of the palmar radiocarpal ligament and of the scapholunate ­ligament appears to induce dissociation. It is therefore concluded that ligamentous injury along with scaphoid fracture is probably necessary if dorsi­flexion instability is to develop.
Figures in this Article

    Topics

    wrist

    First Page Preview

    View Large
    />
    First page PDF preview
    Sign In to Your Personal ProfileSign In To Access Full Content
    Not a Subscriber?
    Get online access for 30 days for $35
    New to JBJS?
    Sign up for a full subscription to both the print and online editions
    Register for a FREE limited account to get full access to all CME activities, to comment on public articles, or to sign up for alerts.
    Register for a FREE limited account to get full access to all CME activities
    Have a subscription to the print edition?
    Current subscribers to The Journal of Bone & Joint Surgery in either the print or quarterly DVD formats receive free online access to JBJS.org.
    Forgot your password?
    Enter your username and email address. We'll send you a reminder to the email address on record.

     
    Forgot your username or need assistance? Please contact customer service at subs@jbjs.org. If your access is provided
    by your institution, please contact you librarian or administrator for username and password information. Institutional
    administrators, to reset your institution's master username or password, please contact subs@jbjs.org

    References

    Accreditation Statement
    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
    CME Activities Associated with This Article
    Submit a Comment
    Please read the other comments before you post yours. Contributors must reveal any conflict of interest.
    Comments are moderated and will appear on the site at the discretion of JBJS editorial staff.

    * = Required Field
    (if multiple authors, separate names by comma)
    Example: John Doe





    Related Content
    The Journal of Bone & Joint Surgery
    JBJS Case Connector
    Topic Collections
    Related Audio and Videos
    PubMed Articles
    Clinical Trials
    Readers of This Also Read...
    JBJS Jobs
    03/19/2014
    Virginia - VIRGINIA COMMONWEALTH UNIVERSITY MEDICAL CENTER
    04/16/2014
    Georgia - Choice Care Occupational Medicine & Orthopaedics
    03/26/2014
    Massachusetts - Boston University Orthopedic Surgical Associates
    03/27/2014
    MA - Boston Medical Center and Boston University School of Medicine