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Title : case 178

Age / Sex : 50 / F


Age / Sex : 50 years / Female

Chief complaint : knee pain




1) What is your impression?

Two weeks later, you can see the final diagnosis with a brief discussion of this case.

* Send Application Answers to In Sook Lee, MD (lis@pusan.ac.kr)

Courtesy : Dong-Ho Ha, Dong-A University medical center



Discussion


Findings:


 Low SI band-like structure anterior to the ACL is noted on sagittal FS PD FSE.


 


Differential Diagnosis: The infrapatellar plica should not be mistaken for the ACL


 


Diagnosis: infrapatellar plica


 


Discussion:


 Infrapatelllar plica has been classified as having a vertical septum as a separate structure from the ACL, split or bipartite, or fenestrated.


  The infrapatellar plica or ligamentum mucosum extends from the anterior intercondylar notch through Hoffa’s fat pad to attach to the inferior pole of the patella


 


References:


 


 


Magnetic resonance imaging in orthopaedics and sports medicine. 3rd Edition. David w Stoller. 679-678 



Correct Answer
Name Institution
total applicants 10
correct answer 5
김성준 강남세브란스병원
박희진 명지병원
김성현 성애병원
이신우 가천의대 길병원
최희석 부천자생영상의학과
semi-correct answer 2
윤영철 삼성의료원
하종수 안양샘병원
  • 서경진 ( 2010-12-13 20:16:35 )
    이 구조물은
    Anterior meniscofemoral ligament of the medial meniscus 입니다.
    AMFL은 medial menscus의 anterior horn에서 mid-intercondylar notch로 extend 하는 dense collagenous tissue 입니다.
    Infrapatellar plica (ligament mucosum)은 inferior patella에서 intercondylar notch로 fat pad를 통해 extend 하는 loose synovial tissue 입니다.

    (참고문헌) Arthroscopy: The Journal of Arthroscopic and Related Surgery, Vol 19, No 1 (January), 2003: pp 90-95

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