According to the Pirani scoring system, which two anatomical regions are assessed to grade the severity of congenital talipes equinovarus?

Explanation

## Pirani Scoring System Overview **Key Point:** The Pirani scoring system is a simple, validated clinical tool used to assess and monitor the severity of clubfoot deformity in neonates and infants. It is non-radiographic and relies on physical examination alone. ## Two Components of Pirani Score ### 1. Hindfoot Score (0–3 points) Assesses posterior foot structures: - **Posterior crease** — depth and visibility of the medial crease at the heel - **Empty heel sign** — fullness of the medial heel (loss of fullness indicates varus) - **Rigid equinus** — degree of plantarflexion contracture ### 2. Midfoot Score (0–3 points) Assesses middle foot structures: - **Medial crease** — prominence of the medial longitudinal arch crease - **Lateral head of talus** — palpability of the talar head on the lateral foot surface - **Curved lateral border** — curvature of the lateral foot border (convexity indicates adduction) ## Total Score Interpretation | Pirani Score | Severity | Clinical Implication | |---|---|---| | 0 | Fully corrected | Maintenance treatment only | | 1–3 | Mild | Responsive to conservative treatment | | 4–6 | Moderate | May require extended casting or intervention | | 7–10 | Severe | High risk of treatment failure; may need surgery | **High-Yield:** A score of **≥ 6** at initial presentation is associated with higher risk of relapse and may predict need for surgical intervention. ## Clinical Application **Clinical Pearl:** The Pirani score is used to: - Quantify initial severity - Monitor response to Ponseti casting method - Predict prognosis and need for surgery - Standardize communication between clinicians **Tip:** The Pirani score is preferred over radiographic measures in early clubfoot because it avoids radiation exposure and correlates well with functional outcome.