Tibial avulsion fracture of the posterior root of the medial meniscus in a skeletally-immature child - A case report

Matthew J. Matava, Young Mo Kim

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

It has been theorized that a traumatic tibial avulsion fracture of the posterior root of the medial meniscus (MM) is the cause of the so-called meniscus ossicle (MO). We report the delayed appearance of a tibial avulsion fracture of the posterior root of the MM after a valgus, twisting injury in a 12-year-old boy with open physes. Magnetic resonance imaging (MRI) scans performed 3. days after the injury did not demonstrate a definitive tibial avulsion fracture of the posterior root of the MM; whereas, a repeat MRI for 3. months post-injury did. Medial extrusion of the MM was also noted on the 3. month MRI. Arthroscopic reattachment of the avulsed posterior root of the MM using a trans-physeal nonabsorbable suture tied over a proximal tibia staple was performed. Follow-up MRI at 6. months postoperatively demonstrated healing of the tibial avulsion fracture of the posterior root of the MM in an anatomic position. The patient had a complete resolution of symptoms and there was no angular deformity or limb-length discrepancy at 2. years postoperatively. To our knowledge, this is the first report describing a tibial avulsion fracture of the posterior root of the MM in a skeletally-immature patient successfully treated by a trans-physeal arthroscopic suture. This case also illustrates the development of the MO of the posterior root of the MM.

Original languageEnglish
Pages (from-to)62-65
Number of pages4
JournalKnee
Volume18
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Medial meniscus
  • Meniscal ossicle
  • Open physis
  • Posterior root
  • Tibial avulsion

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