Min Ji Kim MD, PhD, Presenter: Nothing to Disclose

Sang Hoon Lee, Abstract Co-Author: Nothing to Disclose

Myung Jin Shin, Abstract Co-Author: Nothing to Disclose

Hye Won Chung MD, Abstract Co-Author: Nothing to Disclose

Jin Hee Park MD, Abstract Co-Author: Nothing to Disclose

Sheen-Woo Lee MD, Abstract Co-Author: Nothing to Disclose

Min Jeong Seo, Abstract Co-Author: Nothing to Disclose

et al, Abstract Co-Author: Nothing to Disclose

To evaluate the long-term integrity of allografted lateral meniscus after transplantation in magnetic resonance imaging (MRI).

MATERIAL AND METHODS: 29 patients underwent MRI on 1.5T or 3.0T magnet of the operated knee joint. Initial MRI was done 4 weeks after transplantation and follow-up MR imaging was undertaken 4 months to 39 months (mean 14 months). The study group consisted of 21 men and 8 women, with a range of age (16-52 year, mean age 31). All was operated on lateral meniscus. We evaluated lateral subluxation of allograft, degeneration or tear of lateral meniscus.

RESULT: Tear of anterior horn of lateral meniscus was noted on two patients initially and 21 patients at the final follow-up. Degeneration of anterior horn of allografted meniscus was noted on 18 patients initially and 25 at the final follow-up. Five patients showed degeneration of posterior horn at initial MRI, and 15 patients showed at the final follow-up. There was no tear of posterior horn at initial MRI, increased 4 patients at the final follow-up. Mean lateral subluxation of lateral meniscus was 3.4 mm at initial MRI image and 2.7mm at the final follow-up. There was no correlation between severity of lateral subluxation and tear or degeneration of lateral meniscus.

CONCLUSION; Tear or degeneration of anterior horn of lateral meniscus is frequently seen after meniscus allograft and demonstrates no correlation with lateral subluxation of lateral meniscus.  

To evaluate the state of a lateral meniscus allograft on follow-up MRI images.

Kim, M, Lee, S, Shin, M, Chung, H, Park, J, Lee, S, Seo, M, et al, , Allografted Meniscus Changes at Follow-up Magnetic Resonance Imaging.  Radiological Society of North America 2008 Scientific Assembly and Annual Meeting, February 18 - February 20, 2008 ,Chicago IL. http://archive.rsna.org/2008/6020944.html