Biomechanical Analysis of Two Types of Humerus Supracondylar Fracture Fixation in Anatomical Model.

 To analyze the stability of humerus supracondylar fracture fixation with Kirschner wires comparing intramedullary and lateral (Fi), and two parallel lateral wires (FL) fixation in experimental models, to define which configuration presents greater stability.  A total of 72 synthetic humeri were cross-sectioned to simulate the fracture. These bones were divided into two equal groups and the fractures were fixed with parallel Kirschner wires (FL) and with a lateral and intramedullary (Fi) wire.

Hindfoot aneurysmal bone cyst: report of two cases.

Osseous tumors of the hindfoot are not usual in the literature, the diagnosis in these cases is difficult and can often go unnoticed. Besides that, surgery and reconstruction are complicated due to the complexity of the local anatomy, which makes these lesions even more challenging for the orthopedic oncological professionals. On the following article two cases of aneurysmal bone cyst of the hindfoot are reported, as well as the alternatives and peculiarities in conducting these cases according to the oncological principles.

TREATMENT OF PROXIMAL FEMORAL EPIPHYSIOLYSIS WITH SUBTROCHANTERIC OSTEOTOMY BY THE ILIZAROV METHOD.

Objectives: To evaluate the treatment of severe proximal femoral epiphysiolysis through subtrochanteric osteotomy using the Ilizarov method and to propose a new method for calculating the necessary correction.

Methods: A case study was carried out among patients affected by severe proximal femoral epiphysiolysis who underwent subtrochanteric osteotomy with external multiplanar fixation and were evaluated postoperatively using the modified Southwick classification. A method was developed for calculating the angular correction needed for the surgical procedure.