Heberden’s nodes are present in the distal interphalangeal (DIP) joints, while Bouchard’s nodes are present in the proximal interphalangeal (PIP) joints.
Here's a mnemonic for it!
Thumb sucking sequelae mnemonic - Damp thumb
Digital deformity
Dental problems
Decreased alveolar bone growth
Anterior open bite
Altered growth of facial bones
Mucosal injury
Paronychia
Psychological sequelae