| | Conditions & Treatments | Bones, Joints & Muscles What is a large flat bone on each side of your back below shoulder? The large flat bones on each side of your back below your shoulder are called the scapula or shoulder blades. Bones, Joints & Muscles - Related Articles What Are Calcium Deposits on Bones? How to Use Healing Crystals for Carpal Tunnel Types of Foot Pain Wrist Fracture Surgery Recovery What to Do for Shoulder Joint Pain? Strength-Training Exercises for a Surgically Repaired Rotator Cuff What are the three layers of living bone?