Related Experiment Video
Updated: Jan 24, 2026

A Training and Testing System for Performing Vascular Reconstruction In Vitro
Published on: October 26, 2019
The Modified Vilkki Procedure: Vascularized Metatarsophalangeal Joint Transfer to Reconstruct a Full-Length Radius in
Suresh K Nayar1, Simo K Vilkki2, James P Higgins1
1Curtis National Hand Center, MedStar Union Memorial Hospital, Baltimore, MD.
Abstract:
Radial longitudinal deficiency is a spectrum of deformity ranging from thumb hypoplasia to a shortened or absent radius. Traditional treatments are hindered by recurrent deformity and disruption of future forearm growth. These deficiencies can be addressed by a Vilkki procedure in which a free second toe metatarsophalangeal joint is used to restore a radial column and provide viable physes for continued forearm growth. A classic Vilkki procedure positions the proximal toe metacarpal on the native ulna to create a Y-shaped one-bone forearm. We report a case of a modified Vilkki procedure in which a 2-bone forearm is created using the proximal toe metacarpal to reconstruct the entire radius. In patients with type III radial longitudinal deficiency with suitable residual radius length, the modified Vilkki procedure can allow reconstruction of a 2-bone forearm. This affords the patient correction of the pathoanatomy and the potential for balanced growth and pronosupination.
Related Concept Videos
Types of Building Separation Joints
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
Types of Genetic Transfer Between Organisms
Types of Genetic Transfer Between Organisms
Radius of Gyration of an Area
Handwashing III: During the Procedure and Post-Procedure Steps
Transfer RNA Synthesis
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...

