[Toddler's fracture, case report and review of literature].

Introduction: The suspected diagnosis of a Toddler's fracture can often be complicated by an unclear history, the lack of specific clinical findings and the absence of obvious changes in the initial radiographs. We present the case of an infant of 3 years and 7 months old with a history of falling from her own height with a rotation mechanism of the left pelvic limb. The purpose of this paper is to describe the etiopathology, diagnosis and therapeutic management of these fractures.

[Radiologic correlation between the lateral pillar classification stages and the presence of femoroacetabular impingement in patients with Legg-Calvé-Perthes disease].

Background: Lateral pillar classification has proven to be useful for the prognosis and treatment of patients with Legg-Calvé-Perthes disease. Most patients progress to skeletal maturity with some kind of morphologic alteration. Femoroacetabular impingement is a condition that results in early osteoarthrosis.

[Synovial sarcoma in a patient with metal-on-polyethylene total hip replacement. A case report].

We present the case of a synovial sarcoma five years after primary total hip arthroplasty in a male 65 year-old patient who was surgically treated for left hip pain due to coxarthrosis. A 32 mm uncemented prosthesis with metal-on-polyethylene tribology was placed in the patient. The latter developed synovial sarcoma that caused lung metastasis.

[Slipped femoral epiphysis in children under 10 years of age. Clinical and radiologic evaluation of the surgical treatment].

Objective: Analyze the postoperative clinical and radiographic results of children under 10 years of age with slipped proximal femoral epiphysis and determine the differences compared to other age groups.

Material And Methods: Retrospective study with a minimum follow-up of 2 years; Southwick's angle, treatment, and the rate of contralateral slip were all assessed. The Iowa scale was used for assessment purposes.

[Evaluation of healthy Mexican adolescents. Based on the guidelines provided by the Pediatric Orthopedic Society of North America].

Introduction: Numerous questionnaires have been developed to assess function in activities of daily living. One of these was developed by the Pediatric Orthopedic Society of North America (POSNA) and is known as the PODCI (Pediatric Outcomes Data Collection Instrument). This instrument has been translated to Spanish but had not been validated in a normal Mexican population.