Anatomical deformities are structural abnormalities of organs, tissues, or body regions that deviate from typical morphology and may be congenital or acquired. They arise from disturbances in embryologic development, genetic mutations, teratogenic exposures, mechanical forces, trauma, or disease processes affecting growth and remodeling. Deformities can involve skeletal, muscular, vascular, or visceral structures, altering biomechanical function, load distribution, and organ performance. In research, they serve as phenotypic endpoints for studying developmental biology, genotype–phenotype correlations, pathomechanics, and outcomes of corrective interventions, and are often quantified using imaging-based morphometrics, biomechanical modeling, and standardized classification systems to guide prognosis and therapeutic strategies.