[Investigation and analysis of the cognition degree of parents of 150 pediatric burn patients on scar rehabilitation].

Objective: To analyze the cognition degree of parents of pediatric burn patients on hyperplasia of scar and its prevention and rehabilitation, so as to provide a guidance for preventing deformity and dysfunction caused by scar hyperplasia.

Methods: Questionnaire survey was carried out among parents of 150 pediatric burn patients hospitalized from October 2010 to November 2011 to analyze the cognition degree of patients on the formation of scar after burns, the demand degree for scar treatment between parents of different genders of patients and among parents of patients with burn injury occurred in different body sites, the relationship between the literacy level of parents and their degree of willingness of undergoing scar treatment, and the degree of comprehension and acceptance on the part of parents regarding the methods of prevention and treatment of scar. Data were processed with chi-square test or Fisher's exact test.

[Effects of Ilizarov technique on the histopathological changes of articular cartilage].

Objective: To study the effects of pressure changes on the experimental articular cartilage by utilizing Ilizarov distraction technique.

Methods: The Ilizarov external fixators were fixed at the left ankle joints of 18 experimental dogs, and the fixators were stretched with a speed of 1 mm/d to create a varus deformity. After three weeks, the ankle varus was 15 degree; when the degree was confirmed by X-ray film, the same traction was retained for 3 weeks.