Abstract
The purpose of this study was to systematically review the literature relative to
the following question: Is preoperative magnetic resonance imaging (MRI) an accurate
instrument for the assessment of the size of knee articular cartilage defects compared
with arthroscopy? A systematic search was performed in September 2011 using PubMed
MEDLINE (from 1966), CINAHL (from 1982), SPORTDiscus (from 1985), SCOPUS (from 1996),
and EMBASE (from 1974) databases. Four studies (one study of Level II and three studies
of Level III) were identified that met the predetermined inclusion and exclusion criteria.
The ability of MRI to preoperatively assess the size of cartilage lesions was highly
variable. As a result of inconsistencies between imaging techniques, the methodological
variability and shortcomings of the studies, and the limited amount of data available,
a meta-analysis was not performed. There is some evidence that MRI is an accurate
tool for preoperatively assessing the dimensions of articular cartilage defects. However,
because of the heterogeneity of MRI sequences and the paucity of literature related
to preoperative sizing, it is not possible to make definitive conclusions regarding
the global clinical utility of MRI for guiding the selection of therapeutic strategies.
Keywords
MRI - knee articular cartilage - defect size - preoperative assessment