20. Жийргэвч мөгөөрсний бүтэц
Fibrochondrocytes
collagen (75%)—mainly type I collagen
(>90%) but it also contains types II, III,V, and
VI
extracellular matrix also includes
proteoglycans, glycoproteins, and elastin.
Тэжээлээ нэвчилтийн замаар авна
33. Дүрс оношилгоо
Plain radiography: An anteroposterior weight-bearing view,
posteroanterior 45º flexed view, lateral view, and Merchant
patellar view should be obtained to rule out degenerative joint
changes (arthritis) or fractures.
Arthrography: Historically, arthrography was the standard
imaging study for meniscal tears, but it has been replaced by
magnetic resonance imaging (MRI).
MRI:This is the criterion standard imaging study for imaging
meniscus pathology and all intra-articular disorders.[11, 12]
Normal menisci have a homogeneous low signal.Abnormal meniscal
signals are classified into the following 3 groups:
Grade I – Small area of increased signal within the meniscus
Grade II – Linear area of increased signal that does not extend to an
articulating surface
Grade III – Abnormal increased signal that reaches the surface or edge
of the meniscus
34.
35.
36.
37.
38. MRI has proven to be an effective technique for
evaluating menisci.
Average sensitivity – 95% medial, 81% lateral
Average specificity – 88% medial, 96% lateral
Average accuracy – 92% medial, 92% lateral
Arthroscopy
In the hands of a competent arthroscopist,
arthroscopy is considered the best tool for meniscal
tear diagnosis, with sensitivity, specificity, and
accuracy approaching 100%.
Arthroscopy is therapeutic and diagnostic and thus
offers the advantage of immediate treatment of most
disorders.[12, 13, 14]