Lennart Bert Olger Jans MD, Presenter: Nothing to Disclose

Jacob L. Jaremko MD, Abstract Co-Author: Nothing to Disclose

Michael Ronald Ditchfield MBBS, Abstract Co-Author: Nothing to Disclose

Wouter C. J. Huysse MD, Abstract Co-Author: Nothing to Disclose

Valerie Lambrecht MD, Abstract Co-Author: Nothing to Disclose

Koenraad L. Verstraete MD, PhD, Abstract Co-Author: Nothing to Disclose

To determine if ossification variants of the femoral condyles involving the subchondral bone plate predispose or progress to osteochondritis dissecans.

(a) Follow-up MRI (magnetic resonance imaging) studies of 188 patients with ossification variants of the femoral condyles on the initial MRI of the knee were compared side by side with the baseline study for progression of the ossification variants to OCD (osteochondritis dissecans). (b) The prevalence of ossification variants of the unaffected femoral condyle in 127 patients (aged 9-14 years) with unicondylar OCD on MRI of the knee was compared to a control group of 286 patients (aged 9-14 years). The progression of the ossification variants in both groups was studied by reviewing the follow-up MR examinations side by side with the baseline study. Basic descriptive statistics were performed where appropriate.  

(a) Progression of ossification variants to osteochondritis dissecans was not seen on follow-up MR examinations.    (b) The prevalence of ossification variants in the unaffected condyle in patients with OCD and in the control group was similar. In both the OCD group and in the control group, no follow-up MRI studies demonstrated progression of the ossification variants to OCD.

Ossification variants of the femoral condyle involving the subchondral bone plate do not progress or predispose to osteochondritis dissecans.

Children affected with ossification variability of the femoral condyles do not require routine follow-up MR imaging since these variants do not progress or predispose to OCD.

Jans, L, Jaremko, J, Ditchfield, M, Huysse, W, Lambrecht, V, Verstraete, K, Ossification Variants of the Femoral Condyles Do Not Predispose or Progress to Osteochondritis Dissecans.  Radiological Society of North America 2011 Scientific Assembly and Annual Meeting, November 26 - December 2, 2011 ,Chicago IL. http://archive.rsna.org/2011/11001240.html