Magnetic resonance imaging of meniscal degeneration in torn menisci: a comparison between anterior cruciate ligament deficient knees and stable knees.
Signal anomalies observed in magnetic resonance imaging of the intrameniscal tissue adjacent to the tear were compared between stable knees (group 1, 54 menisci) and anterior cruciate ligament (ACL) deficient knees (group 2, 98 menisci). The histological significance of these signal anomalies was also studied (n = 25). The frequency of intrameniscal signal anomalies adjacent to the tear was significantly lower in ACL-deficient knees than in ACL-stable knees (P = 0.0022). There was a close correlation between the imaging anomalies and the presence of histological lesions (fissures, degeneration) within meniscal tissues adjacent to the tear (sensitivity: 0.95, specificity: 0.60). Our results suggest that the severity of intrameniscal degenerative changes adjacent to the tear are lower in ACL-deficient knees than in ACL-stable knees.
Nawata
K
K
Department of Orthopedic Surgery, Faculty of Medicine, Tottori University, 36-1 Nishimachi, Yonago 683-8504, Japan. nawata@grape.med.tottori-u.ac.jp
Teshima
R
R
Enokida
M
M
Suzuki
T
T
Yamagata
T
T
D000293:Adolescent; D000328:Adult; D016118:Anterior Cruciate Ligament / Q000473:pathology; D000070598:Anterior Cruciate Ligament Injuries; D001182:Arthroscopy; D002357:Cartilage Diseases / Q000175:diagnosis / Q000473:pathology; D019902:Chondrocytes / Q000473:pathology; D004396:Coloring Agents; D006801:Humans; D007718:Knee Injuries / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008592:Menisci, Tibial / Q000473:pathology; D008875:Middle Aged; D012421:Rupture; D012680:Sensitivity and Specificity; D000070600:Tibial Meniscus Injuries
D004396:Coloring Agents