Link to the article: https://pubmed.ncbi.nlm.nih.gov/32582383/
This article talks about slipped capital femoral epiphysis (SCFE) and the possible causes of it. One of which is a high BMI. They looked at 68 healthy hips/subjects. They found there was a correlation between BMI percentile and decreased epiphyseal tubercle size which is a factor contributing to reduced epiphyseal stability.
TL;DR Heavy kids have a higher chance of developing hip problems (SCFE)