BACKGROUND The purpose of this study was to present a novel surgical technique using an on-top osteotomy and to assess the clinical and radiographic outcomes for the triphalangeal Wassel type VI thumb duplication patients. METHODS The surgical technique involves ablation of the radial thumb at distal one-third of the metacarpal, corresponding metacarpal osteotomy of the ulnar thumb, with amal...

We show that the class of groups with k-multiple context free word problem is closed under amalgamated free products over finite subgroups. We also show that the intersection of two context free languages need not be multiple context free.

conclusions in conclusion, chit1 24 bp duplication might not be a candidate gene for susceptibility to ptb. larger studies are necessary to confirm these findings in various populations. results homozygous wild type, heterozygous and homozygous mutant frequencies of chit1 24 bp duplication polymorphism were 43.9%, 43.9% and 12.2% in controls and 42.8%, 45.1% and 12.1% in ptb patients. we found ...