A nurse is assessing a newborn diagnosed with congenital clubfoot (talipes equinovarus). Which assessment finding would the nurse expect to observe?

Congenital clubfoot is characterized by the foot turned inward and downward with the heel pointing up, resembling a golf club. Other options describe opposite deformities or unrelated findings.

Understanding Congenital Clubfoot (Talipes Equinovarus)

To answer this question, you need to visualize the specific anatomical position of the foot in a newborn with congenital talipes equinovarus (CTEV), commonly known as clubfoot. The deformity is not a single problem but a combination of four distinct components, and the name itself provides clues to its appearance.

Breaking Down the Terminology

The term "talipes equinovarus" describes the exact position of the foot and ankle:
- Tali-: Refers to the talus bone (ankle).
- -pes: Refers to the foot.
- Equino-: Derived from "equinus," meaning horse-like. This describes the plantarflexion deformity where the foot is fixed in a downward-pointing position, similar to a horse's hoof. The heel is elevated and does not touch the ground .
- Varus: This describes the inversion deformity, where the sole of the foot is turned inward toward the midline of the body.

When these components combine, the classic presentation is a foot that is turned inward and downward, with the heel pointing up and the forefoot adducted. This aligns precisely with the correct answer. The Ponseti method, which is the gold standard for conservative management of CTEV, is specifically designed to sequentially correct these deformities, starting with the cavus and forefoot adduction, then the varus, and finally the equinus [1,3]. The final critical step of this method is often a percutaneous Achilles tenotomy to release the tight heel cord and fully correct the residual equinus deformity, which prevents the heel from coming down [2,3].

Analyzing the Incorrect Options

- Option 1: "The foot is turned outward and upward with the heel pointing down." This describes a calcaneovalgus deformity, which is a different positional foot condition. In this condition, the foot is excessively dorsiflexed and everted, almost touching the shin, which is the opposite of the equinovarus deformity.
- Option 3: "The foot appears normal but lacks dorsiflexion movement." While a lack of dorsiflexion could indicate a tight Achilles tendon (equinus), this option fails to capture the varus (inward turning) and adduction components that are fundamental to the structural deformity of clubfoot. The foot in CTEV does not appear normal; the structural malalignment is visually obvious at birth .
- Option 4: "The foot is enlarged with visible swelling around the ankle joint." CTEV is a deformity of bone alignment and soft tissue contractures, not an acute inflammatory or edematous process. The foot is typically smaller and shorter on the affected side, not enlarged, and swelling is not a characteristic assessment finding in an uncomplicated newborn with idiopathic clubfoot.

The assessment of a newborn with CTEV relies on recognizing this classic combination of forefoot adduction, midfoot varus, and hindfoot equinus, which creates the unmistakable inward and downward posture of the foot [1,3].