The Displaced Bucket-Handle Tear of the Meniscus: MRi Findings.
10.3348/jkrs.1994.31.1.145
- Author:
Young Mi KWON
;
Seon Kwan JUHNG
;
Jong Jin WON
;
Gyung Hi PARK
;
Gang Deuk KIM
- Publication Type:Original Article
- MeSH:
Anterior Cruciate Ligament;
Collateral Ligaments;
Diagnosis;
Humans;
Joints;
Knee;
Knee Injuries;
Magnetic Resonance Imaging*;
Posterior Cruciate Ligament;
Retrospective Studies
- From:Journal of the Korean Radiological Society
1994;31(1):145-150
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE:To describe the features of displaced bucket-handle tears of the menisci on magnetic resonance (MR) images and to assess associated knee injuries. MATERIALS AND METHODS: We retrospectively reviewed coronal and sagittal MR images in 21 bucket-handle tears. The subjects were patients who had underwent preoperative MR evaluations of the knee and were identified from the arthroscopic surgical records as bucket-handle tear. We also described patterns of associated injuries. RESULTS:On coronal MR images, (a) in all cases, peripheral portion of the meniscus(bucket) had the appearance of a truncated or altered wedge;(b) central fragments(handle) were observed to be sitting in the intercondylar notch(16 cases) or located between the fernoral condyle and tibial plateau (5 cases). On sequential sagittal MR images, (c) the bow-tie appearance of the body of the meniscus was not seen (13 cases);(d) the bow-tie appearance of the displaced inner fragment was seen at the intercondylar notch level (9 cases);(e) "double posterior cruciate ligament" sign was presented (7 cases). Associated joint abnormalities included anterior cruciate ligament tears(l 1), contralateral meniscal tears(l 1), posterior cruciate ligament tears(3), medial collateral ligament tears(3), osteoarthritis(1), and Baker's cyst(l). CONCLUSION:Awareness of these characteristic MR findings(a-e) may increase the sensitivity of MR imaging in the diagnosis of displaced bucket-handle tears, and the MRI may be helpful to correctly characterize the displaced fragment and patterns of associated injury, providing arthroscopists a guide to appropriate surgical plans.
