STJ stands for which joint?

• A. Sterno-tibial Joint
• B. Superior tibiofibular joint
• C. Talonavicular joint
• D. Subtalar Joint

Answer: (D)

STJ refers to the subtalar joint, the articulation between the talus and the calcaneus in the hindfoot, located just below the ankle joint. This joint is responsible for inversion and eversion of the foot and is also called the talocalcaneal joint, reflecting its location and neighbors. The other options don’t fit because they involve different regions: the sterno-tibial (not a standard foot joint at all), the superior tibiofibular joint is at the knee between the tibia and fibula, and the talonavicular joint is between the talus and navicular bone in the midfoot. The subtalar joint is the one described by STJ.