Age, sex, and Osteotomy Site effects on bone formation in 370 cases of bilateral tibial lengthening

Limb shortness is one of the most common orthopedic referrals, and in the past, the most common cause was polio. In these cases, equalizing the length of the two lower limbs is a necessity, which can be done with methods such as osteotomy. Various factors can affect the success of this method. In this study, we want to investigate the relationship between age, sex, and osteotomy site with bone formation and growth. The current study is an analytical-cross-sectional study in which 370 patients with indications for limb lengthening were selected for 18 years and underwent lengthening using the LON method. Data collection after surgery and during height gain was done with the help of a questionnaire. Finally, to analyze the data using descriptive statistics and determine the significance of the statistics, SPSS version 20 software was used. Examining the relationship between the amount of ossification and the osteotomy site in men and women showed that, unlike men, there is a significant inverse relationship between the ossification site and the osteotomy site in both the left and right legs. Also, according to the data of this research, the role of the age variable was statistically significant in such a way that the higher the age, the less bone formation in people. Finally, our findings showed that bone growth rate after height correction surgery can be affected by factors such as age, gender, and osteotomy site. Therefore, checking and controlling these cases before height correction surgery can effectively improve the operation results