Wrisberg variant of the discoid lateral meniscus with flipped meniscal fragments simulating bucket-handle tear: MRI and arthroscopic correlation

Skeletal Radiol. 2011 Aug;40(8):1089-94. doi: 10.1007/s00256-011-1124-4. Epub 2011 Feb 22.

Abstract

An MRI diagnosis of the Wrisberg variant discoid lateral meniscus should be considered in patients presenting with an anteriorly flipped posterior horn fragment without a definable peripheral rim. We present four cases discovered on arthroscopy that were thought to resemble bucket-handle tears on preoperative MRI. Posterior hypermobility poses a surgical challenge as excessive debridement without careful attention to underlying meniscal morphology may lead to further instability. Although this diagnosis can be difficult to make on MRI, alerting the orthopedic surgeon preoperatively may influence repair technique and meniscus conservation.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Arthroscopy*
  • Child
  • Female
  • Humans
  • Magnetic Resonance Imaging / methods*
  • Male
  • Menisci, Tibial / abnormalities*
  • Menisci, Tibial / pathology
  • Menisci, Tibial / surgery
  • Retrospective Studies
  • Tibial Meniscus Injuries