tailieunhanh - Nếp: bệnh lý hay không?

Một lần xảy ra trong vòng một doanh được gọi là một synovialis nếp. Ba như plicae được nhìn thấy thường xuyên trong khớp đầu gối của con người. Những nếp gấp là những cấu trúc bình thường đại diện cho các tàn dư của mô trung mô và / hoặc SEPTA hình thành trong quá trình phát triển phôi thai của khớp đầu gối, | Plica Pathologic or Not J. Whit Ewing MD Abstract A fold that occurs within a joint is referred to as a plica synovialis. Three such plicae are seen with regularity within the human knee joint. These folds are normal structures that represent remnants of mesenchymal tissue and or septa formed during embryonic development of the knee joint and can be seen during arthroscopic inspection of the knee joint. Controversy exists within the orthopaedic community as to whether a plica can develop pathologic changes sufficient to cause disabling knee symptoms. The author defines the clinical syndrome describes the arthroscopic appearance of pathologic plica and outlines nonsurgical and surgical methods of management of this uncommon condition. J Am Acad Orthop Surg 1993 1 117-121 A plica synovialis is a membranous fold or ridge found in the synovial lining of a joint. Three such folds are found with regularity in the human knee. In the normal state these folds are quite filmy thin and vascularized and have no known function. The most common plica the plica synovialis patellaris usually referred to as the ligamentum mucosum is located in the intercondylar notch extending from below the level of the articular surface of the femur to the tibial plateau. It covers the anterior cruciate ligament and frequently blocks its visualization during diagnostic arthroscopy. The second most frequently found plica is the plica synovialis supra-patellaris commonly called the suprapatellar plica. It is located in the suprapatellar space extending from the medial wall of the knee toward the lateral wall and sometimes creates a complete septum between the suprapatellar bursa and the knee joint proper. It may be fenestrated in its central portion by an oval opening or porta. Wide variations in its shape and width are The third most frequently seen plica is the plica synovialis mediopatellaris commonly referred to as a medial shelf or medial plica. This shelflike fold of synovial membrane