Percutaneous screw fixation promotes healing of lateral condyle nonunion in children.

Background: This retrospective study examined whether pediatric lateral condyle nonunions could be successfully managed by percutaneous screw fixation. We report the outcome of this minimally invasive technique avoiding open reduction and bone grafting associated with the risk of avascular necrosis (AVN), infection, and stiffness.

Methods: The hospital radiology database was searched between 1998 and 2008.

Femoral varus derotation osteotomy for the treatment of habitual subluxation and dislocation of the pediatric hip in trisomy 21: a 10-year experience.

Background: Habitual hip subluxation and dislocation are potentially disabling features of the trisomy 21 syndrome. We describe outcomes after a femoral varus derotation osteotomy to achieve and maintain hip stability and community ambulation.

Methods: All individuals with trisomy 21, who underwent hip surgery at our institution between 1998 and 2008, were searched using the hospital databases.

Arthrographically defined subchondral defects in Perthes' disease.

Since the original 1910 description of Perthes' disease, the aetiology and pathophysiology of this condition have remained elusive, and the treatment controversial. We found during arthrography that it has been possible to demonstrate a fluid-filled space between the ossified epiphysis of the femoral head and its overlying articular cartilage. This finding has not previously been documented in the literature, and we believe this mechanically vulnerable region may be subject to mechanical distortion, acting as a significant contributor to the evolving femoral head deformity seen in Perthes' disease.