All joints
Joint guide
Small (pinky) finger — joint overview
The small finger anchors the ulnar side of the hand for cupping and grip control. Its MCP, PIP, and DIP joints add the last segment of the power arc.
Diagram
Schematic for orientation — not a substitute for imaging or an in-person exam.
Related anatomy topics
Sources & further reading
We cite major society patient education, NIH institute pages, and MedlinePlus for naming and general joint context. Links open in a new tab; access dates help you judge currency when guidelines update.
- Arthritis of the hand — OrthoInfo — American Academy of Orthopaedic Surgeons(accessed 2026-04-24)
- Hand and wrist anatomy — American Society for Surgery of the Hand(accessed 2026-04-24)
- Hand problems and arthritis — National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH)(accessed 2026-04-24)