The Different Shapes of BonesOnline version Identify the differences between the five shapes of bones by Hunter Finley 1 Flat Bone 2 Long Bone 3 Short Bones 4 Irregular Bones 5 Sesamoid Bones Rib Pelvis Sternum Protection Thin and curved Cranial Tibia Fibula Ulna Femur Provide strength Cylindrical Lunate Scaphoid Cube Shaped Ankle bones Vary in shape Vertebrae Mandible Sacrum Small and round Patella Unique Found in tendons