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Medial meniscus posterior root attachment injury and degeneration: MRI findings

A O Jones1, M T W Houang, R S Low

  • 1Medical Imaging Department, Blacktown Hospital, Sydney, NSW, Australia. andrew_jones@wsahs.nsw.gov.au

Australasian Radiology
|August 4, 2006
PubMed

Insights

Injuries to the medial meniscus posterior root can be missed on MRI. Prompt identification of an intact meniscal root is crucial to prevent early osteoarthritis.

Area of Science:

  • Orthopedic imaging
  • Knee MRI diagnostics
  • Meniscal pathology

Background:

  • The medial meniscus posterior root attachment is visible on MRI.
  • Meniscal root injuries can be overlooked during radiological reviews.
  • Pathology of the meniscal root can lead to meniscus functional incompetence.

Purpose of the Study:

  • To highlight the significance of identifying an intact medial meniscus posterior root on MRI.
  • To review the association between meniscal root tears and medial meniscus extrusion.
  • To emphasize the link between meniscal root pathology and early osteoarthritis.

Main Methods:

  • Review of existing literature and MRI findings related to medial meniscus posterior root.
  • Analysis of imaging criteria for meniscal root integrity.
  • Correlation of meniscal root tears with medial meniscus extrusion measurements.

Main Results:

  • Medial meniscus posterior root attachment is readily identifiable on MRI.
  • Meniscal root tears are associated with medial meniscus extrusion exceeding 3 mm.
  • Overlooking these injuries can lead to functional meniscal incompetence.

Conclusions:

  • Accurate identification of the medial meniscus posterior root on MRI is essential.
  • Meniscal root tears can cause significant medial meniscus extrusion, indicating functional compromise.
  • Early detection of meniscal root pathology is vital for preventing degenerative joint disease.

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