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Biomedical subjects

R D Wolfe

Publications and source records attributed to R D Wolfe.

15 recordsLinked to original sources
PubMed1991

Meniscal tears: MR and arthrographic findings after arthroscopic repair.

Magnetic resonance (MR) imaging was performed on 29 previously repaired menisci and one conservatively treated meniscus (total, 30 menisci). Intermediate- and T1-weighted MR sequences revealed persistent signal intensity extending to an articular surface (grade 3 signal intensity) in 27 of the 30 menisci. On T2-weighted images, seven of the 30 menisci were found to contain unequivocally higher signal intensity, defined by a full-thickness defect (grade 3 signal intensity involving two articular surfaces) increasing in signal intensity to a level equivalent to that of joint fluid. The MR imaging and arthrographic appearances of 23 of the 30 menisci were compared. Arthrographic examination revealed partial or complete healing in 13 menisci and tears in 10. The presence of grade 3 signal intensity on intermediate- and T1-weighted MR images did not reliably predict a tear seen at arthrography. Unequivocally higher signal intensity on T2-weighted images is a useful sign in the prediction of a persistent meniscal tear (sensitivity, 60%; specificity, 92%; P less than .02). Since presence of grade 3 signal intensity on intermediate- and T1-weighted images does not reliably predict a tear and unequivocal T2 increase in intensity has a sensitivity of only 60%, arthrography should be considered for assessment of the symptomatic, previously repaired meniscus.

Adult↗
PubMed1985

Cruciate ligament injury: diagnostic difficulties in the presence of meniscal injury.

During knee arthrography, the appearance of a mass within the intercondylar notch on the flexed lateral stress radiograph usually indicates a torn cruciate ligament. This mass may also be produced by a torn or peripherally separated meniscus, usually the lateral, that displaces during flexion to lie adjacent to and to obscure the outline of the cruciates. Recognition of this phenomenon is important, both in avoiding the erroneous diagnosis of a cruciate tear and in alerting the arthrographer to the possibility of a peripheral meniscal separation when the ligaments are obscured by a mass.

Adolescent↗
PubMed1980

Clinical and arthrographic findings in meniscal cysts.

Fifty meniscal cysts (36 lateral and 14 medial) were found in a review of 2,522 knee arthrograms. Thirty-eight cysts presented as a palpable bulge. In all cases characteristic horizontal tears extended into the periphery, with pooling of contrast material and club-shaped terminations. The differential diagnosis of a bulge around the knee joint is discussed. Arthrographic evaluation is valuable in determining appropriate treatment.

Adolescent↗