[MRT in clinically unclear posttraumatic knee joint lesions].

An MRI examination was performed on 31 patients with clinically questionable posttraumatic knee joint lesions. A broad range of intra- und extraarticular pathological changes was found. The correlation of MRI with arthroscopy and surgery showed a correct MRI diagnosis in 78% of the meniscal lesions (n = 18) and in 89% of the anterior cruciate ligament ruptures (n = 9). An analysis of false positive and false negative MRI diagnoses was made. MRI offers the opportunity for noninvasive complex assessment of knee joint structures and is of particular value in the diagnosis of posttraumatic knee joint lesions.