What is the normal capsular pattern for the talocalcaneal (subtalar) joint?

• A. Varus > Valgus
• B. Valgus > Varus
• C. Varus = Valgus
• D. No pattern

Answer: (A)

The main idea is understanding how a joint’s capsule restricts motion when it’s tight. For the talocalcaneal (subtalar) joint, the capsule and supporting ligaments limit inversion (varus) more than eversion (valgus). Clinically, that means you’ll see a greater loss of ROM when attempting to invert the foot than when everting it, reflecting the usual pattern of restriction for this joint. The idea that inversion and eversion are restricted equally or that there’s no consistent pattern doesn’t match how the subtalar capsule behaves.