What ensures that the correct amino acid is added during translation?

thanks to the genetic code, this allows cells to decode an mRNA in an amino acid chain

Transfer RNAs, or tRNAs, connect the mRNA codons with the amino acids for which they encode. One end of each tRNA has a three nucleotide sequence called anticodon, which can be attached to a specific codon of the messenger RNA. The other end of tRNA carries the amino acid that specifies the codon that is present in the messenger RNA

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.