A nurse is providing teaching to the caregiver of an infant born with congenital talipes equinovarus (clubfoot). Which of the following statements should the nurse include in their teaching?

The question addresses the etiology of congenital talipes equinovarus. Application of musculoskeletal pathophysiology is required to explain how soft tissue abnormalities, specifically involving tendons and ligaments, result in the characteristic inward and downward rotation of the foot seen at birth. Choice A rationale Clubfoot is primarily a soft tissue deformity involving muscles, tendons, and ligaments rather than a primary bone development error. While bones may eventually misshape due to the tension, the underlying cause is not a failure of bone formation. Choice B rationale Poor blood supply and tissue death describe avascular necrosis, which is the pathology for Legg-Calve-Perthes disease. This mechanism is unrelated to the congenital structural alignment issues of the foot and ankle found in infants with talipes equinovarus. Choice C rationale Clubfoot is not caused by a simple joint dislocation. It is a complex deformity where the foot is fixed in adduction and supination due to the abnormal tightness of the posterior and medial structures, not a displaced joint. Choice D rationale The inward and downward position of the foot is caused by abnormally short and tight tendons, particularly the Achilles tendon and those on the medial side. This tension pulls the foot out of its normal anatomical alignment during fetal development.