Ankle and foot deformities and malformations in proximal femoral focal deficiency.

Purpose: To describe foot abnormalities in proximal femoral focal deficiency and their correlation to the severity.

Methods: Eighty-nine extremities in 87 patients were evaluated between 1996 and 2020 clinically and radiologically. Fibula length, ankle shape, tarsal coalitions, and the number of foot rays were recorded.

[Comparison of Modifications of Femoral and Tibial Lengthening in Children].

PURPOSE OF THE STUDY Limb lengthening has always belonged to the most complex surgical techniques in paediatric orthopaedics. In our study, we compared the results of femoral and tibial lengthening using three different surgical techniques. The presented study aimed to shorten the duration of external fixation to a minimum and to reduce the complication rate.

Lengthening of the ulna by callotasis in children with multiple hereditary exostoses: comparison of methods with and without internal fixation.

Purpose: The goal of this retrospective study was to compare the gradual lengthening of the ulna in children with multiple hereditary exostoses with and without an elastic intramedullary nail.

Methods: Between 1998 to 2018, the ulna was lengthened in 28 forearms in 21 patients (aged 7.1 to 16.

[Correction of Valgus Knee Deformity by Hemiepiphyseodesis: a Restrospective Analysis].

PURPOSE OF THE STUDY Hemiepiphyseodesis is commonly used to correct a coronal plane knee deformity during childhood. Since 2007 Blount staple method has been replaced by the eight-Plate Guided Growth System. We retrospectively analysed the indications, results and complications of the older Blount staple method so as to compare them with the newer eight-Plate Guided Growth system.

Analysis of Gene Expression of Pseudoarthrosis Tissue in Congenital Short Femur, Initial Study and First Exprerience.

PURPOSE OF THE STUDY Although the congenital short femur is morphologically well characterized, changes at the molecular level have not been described in the literature so far. The absence of such information, along with the unknown aetiology of the defect, was the motivation for analysing angiogenesis and osteogenesis in the pseudoarthrosis (false joint) tissue in PFFD patients compared to physiological bone. The authors expected differences in gene expression, particularly in the quantity of expressed genes.