Explanation

The human trunk includes:

• Vertebral column: 26 bones
• Ribs: 24 bones (12 pairs)
• Sternum: 1 bone
• Hyoid bone: 1 bone (sometimes included)
• Coccyx: 4 fused bones (counted as 1)

Total: 26 (vertebrae) + 24 (ribs) + 1 (sternum) + 1 (hyoid) + 4 (coccyx, counted as 1) = 58 bones