> For the complete documentation index, see [llms.txt](https://handtracking.lightbuzz.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://handtracking.lightbuzz.com/api-reference/fingerjointtype.md).

# FingerJointType

| Name      | Index | Description                                       |
| --------- | ----- | ------------------------------------------------- |
| Root      | 0     | The root of the hand.                             |
| ThumbCMC  | 1     | The thumb carpometacarpal joint.                  |
| ThumbMCP  | 2     | The thumb metacarpophalangeal joint.              |
| ThumbIP   | 3     | The thumb interphalangeal joint.                  |
| ThumbTip  | 4     | The thumb tip joint.                              |
| IndexMCP  | 5     | The index finger metacarpophalangeal joint.       |
| IndexPIP  | 6     | The index finger proximal interphalangeal joint.  |
| IndexDIP  | 7     | The index finger distal interphalangeal joint.    |
| IndexTip  | 8     | The index finger tip joint.                       |
| MiddleMCP | 9     | The middle finger metacarpophalangeal joint.      |
| MiddlePIP | 10    | The middle finger proximal interphalangeal joint. |
| MiddleDIP | 11    | The middle finger distal interphalangeal joint.   |
| MiddleTip | 12    | The middle finger tip joint.                      |
| RingMCP   | 13    | The ring finger metacarpophalangeal joint.        |
| RingPIP   | 14    | The ring finger proximal interphalangeal joint.   |
| RingDIP   | 15    | The ring finger distal interphalangeal joint.     |
| RingTip   | 16    | The ring finger tip joint.                        |
| PinkyMCP  | 17    | The pinky finger metacarpophalangeal joint.       |
| PinkyPIP  | 18    | The pinky finger proximal interphalangeal joint.  |
| PinkyDIP  | 19    | The pinky finger distal interphalangeal joint.    |
| PinkyTip  | 20    | The pinky finger tip joint.                       |
| Palm      | 21    | The middle of the palm.                           |