3 thoughts on “Focal ossification/ protuberance/ exostosis in femoral cartilage, does it matter?”

  1. OCAD
    rlambert
    The process is beautifully described and illustrated in all Don Resnick’s
    chapter’s on OA – single or multi volume editions of his textbooks – since
    the 1st edition.
    So it has been well described on XR long before MRI.

    Some folk also describe it as a ‘button osteophyte’ but I much prefer
    central or chondral osteophyte.

    Cheers,

    Rob

    On Tue, Mar 29, 2022 at 2:47 PM Avneesh Chhabra < Avneesh.Chhabra@utsouthwestern.edu> wrote:

  2. DKB_BONE_RAD

    I completely agree with Rob

    Dennis K. Bielecki, MD

    Senior Lecturer in Imaging Sciences

    King’s College, London, and

    Senior MSK Specialty Radiologist

    Department of Diagnostic Imaging

    Kings College Hospital, London, SE5 9RS

    +44 (0) 7771 98 99 81

    Editor-in-Chief, Radiology Online Journal

    Member, Royal College of Radiology

    Member, European Skeletal Society

    Member, British Society of Skeletal Radiology

    ________________________________

    ________________________________
    Sent: Tuesday, March 29, 2022 10:57 PM
    Cc: kristian.kolnes@gmail.com <kristian.kolnes@gmail.com>; OCAD MSK <ocad-msk@googlegroups.com>

    The process is beautifully described and illustrated in all Don Resnick’s chapter’s on OA – single or multi volume editions of his textbooks – since the 1st edition.
    So it has been well described on XR long before MRI.

    Some folk also describe it as a ‘button osteophyte’ but I much prefer central or chondral osteophyte.

    Cheers,

    Rob

    Hi,

    This is called central or chondral osteophyte

    it’s presents means prior Gr 4 cartilage defect

    see this article

    Komarraju A, Goldberg-Stein S, Pederson R, McCrum C, Chhabra A. Spectrum of common and uncommon causes of knee joint hyaline cartilage degeneration and their key imaging features. Eur J Radiol. 2020 Aug;129:109097. doi: 10.1016/j.ejrad.2020.109097. Epub 2020 Jun 1. PMID: 32534353.

    Best!

    AC

    Avneesh Chhabra, M.D. M.B.A.

    Professor, Radiology & Orthopedic Surgery

    Chief, Musculoskeletal Radiology

    Department of Radiology

    5323 Harry Hines, Blvd. Dallas, Tx-75390-9316

    Office: 214-648-2122

    http://www.utsouthwestern.edu/radiology<nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.utsouthwestern.edu%2Feducation%2Fmedical-school%2Fdepartments%2Fradiology%2F&data=04%7C01%7C%7C88a5111442884a579b9908da11cf2c9d%7C84df9…>

    

    EXTERNAL MAIL

    I have seen this entity in the knee a couple of times without taking notice, interpreted it as some kind of ‘variant’..
    This time I know for sure that it has .emerged during the last couple of years in this 65 yo woman. (I doubt it is symptomatic.. her problem is the probably the medial gonarthrosis.)

    Does anyone know what this protuberance represent, and does it matter?

    (sorry if similar has been posted before)

    Regards, Kristian

    ———————————–
    Kristian Kolnes
    Ekornvn.9, 6102 Volda
    Tlf 95284797

  3. kristian.kolnes
    But of course.. it is clearly and obviously a button/ central/ chondral
    osteophyte..

    I’m probably the only one in the entire world who didn’t know about this
    entity.. and when I am finally able to google the correct string it is
    all over the place..

    Thank you Eddie, my favourite lecturer Phillip, Byron, Jan, Gustav,
    Faraji, Daniel, Sergio, Justin, T Cantarelli, Avneesh, Donald (wow, I’m
    starstruck 😀 ) , Robert, Dennis..

    Love OCAD. Must do this more often.

    And Avneesh, of course you have published an article on the subject, why am
    I not surprised ?! Love it 🙂

    Kind regards, Kristian

    tir. 29. mar. 2022, 23:28 skrev Kristian Kolnes <kristian.kolnes@gmail.com>:

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