In the sitting position, which site is commonly at risk for pressure sores?

• A. Ischial tuberosities
• B. Scapulae
• C. Heels
• D. Clavicle

Answer: (A)

When you’re seated, the body’s weight is transmitted mainly through the buttocks into the chair, concentrating pressure on the ischial tuberosities. These bony prominences have relatively little soft tissue padding in many people, so sustained pressure here reduces blood flow to the tissues, leading to ischemia and a potential pressure sore. Shear from sliding or poor posture can further compromise tissue viability in this area. While other sites like the scapulae or heels can be at risk in different positions, they aren’t the primary weight-bearing contact in a normal seated posture, making the ischial tuberosities the most at risk in sitting.