👉 Metrectasia is a type of congenital anomaly that occurs when two or more bones in the body are fused together without enough space between them. This can lead to deformities and sometimes complications such as infections, fractures, and malformations. Metrectasia is often caused by a congenital defect in the spine, which can result from a variety of factors including genetic variations, birth defects, or trauma during birth. Metrectasia typically occurs in children between 3-12 years old