Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Knee motion in a long leg cast

K A Krackow, W L Vetter

    The American Journal of Sports Medicine
    |July 1, 1981
    PubMed
    Summary

    Knee casts offer limited stability after surgery, allowing significant joint motion. Secure fixation is crucial to prevent ligament damage during recovery, as demonstrated in cadaver studies.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    How I Manage Mallet Finger.

    The Physician and sportsmedicine·2016
    Same author

    Aerobic Dance Injuries.

    The Physician and sportsmedicine·2016
    Same author

    The Knee Society Index of Severity for failed total knee arthroplasty: development and validation.

    Clinical orthopaedics and related research·2001
    Same author

    The Knee Society Index of Severity for failed total knee arthroplasty: practical application.

    Clinical orthopaedics and related research·2001
    Same author

    Avoiding proximal stress shielding: modular magic!

    Orthopedics·2001
    Same author

    Use of audiotapes for patient education, medical record documentation, and informed consent in lower extremity reconstruction.

    Orthopedics·2001

    Area of Science:

    • Orthopedic Surgery
    • Biomechanics
    • Anatomy

    Background:

    • Postoperative knee ligament stability is essential for successful surgical outcomes.
    • Traditional cast immobilization methods may not adequately protect surgical repairs.
    • Understanding knee joint motion under cast constraints is critical.

    Purpose of the Study:

    • To introduce principles for reestablishing static ligamentous stability after knee surgery.
    • To evaluate the effectiveness of long leg plaster casts in preventing knee motion.
    • To highlight the necessity of secure tibiofemoral fixation.

    Main Methods:

    • A cadaver study using necropsy specimens was conducted.
    • Knee motion was assessed in and out of long leg plaster casts.
    • Manual manipulation was used to evaluate varus-valgus, anterior, posterior, and rotatory instability.

    Main Results:

    • Casts with minimal or no padding allowed significant knee motion.
    • Medial opening under valgus stress ranged from 64-100% of pre-casting instability.
    • Anterior instability was poorly controlled, with 48% of rotational instability remaining.

    Conclusions:

    • Standard cast immobilization provides insufficient protection for knee ligament reconstructions.
    • Secure, temporary tibiofemoral fixation is necessary to prevent early postoperative complications.
    • Current methods for cast immobilization require improvement to ensure joint stability.

    Related Experiment Videos