> 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/hand-tracking-unity-plugin/supported-joints.md).

# Supported Joints

The Hand Tracking Unity plugin supports 22 different joints, as shown in the picture.

<div data-full-width="true"><figure><img src="/files/1Gu2pJRzb0T8Nzk71XTQ" alt=""><figcaption><p>Supported Joints</p></figcaption></figure></div>

Below you can find the joints grouped by area:

### Root

<table><thead><tr><th>Name</th><th>Description</th><th data-hidden>Index</th></tr></thead><tbody><tr><td>Root</td><td>The root of the hand (wrist).</td><td>0</td></tr></tbody></table>

### Thumb

<table data-full-width="false"><thead><tr><th>Name </th><th>Description</th><th data-hidden>Index</th></tr></thead><tbody><tr><td>Thumb CMC</td><td>The thumb carpometacarpal joint.</td><td>1</td></tr><tr><td>Thumb MCP</td><td>The thumb metacarpophalangeal joint.</td><td>2</td></tr><tr><td>Thumb IP</td><td>The thumb interphalangeal joint.</td><td>3</td></tr><tr><td>Thumb Tip</td><td>The thumb tip joint.</td><td>4</td></tr></tbody></table>

### Index Finger

<table><thead><tr><th>Name </th><th>Description</th><th data-hidden></th></tr></thead><tbody><tr><td>Index MCP</td><td>The index finger metacarpophalangeal joint.</td><td>5</td></tr><tr><td>Index PIP</td><td>The index finger proximal interphalangeal joint.</td><td>6</td></tr><tr><td>Index DIP</td><td>The index finger distal interphalangeal joint.</td><td>7</td></tr><tr><td>Index Tip</td><td>The index finger tip joint.</td><td>8</td></tr></tbody></table>

### Middle Finger

<table><thead><tr><th>Name </th><th>Description</th><th data-hidden></th></tr></thead><tbody><tr><td>Middle MCP</td><td>The middle finger metacarpophalangeal joint.</td><td>9</td></tr><tr><td>Middle PIP</td><td>The middle finger proximal interphalangeal joint.</td><td>10</td></tr><tr><td>Middle DIP</td><td>The middle finger distal interphalangeal joint.</td><td>11</td></tr><tr><td>Middle Tip</td><td>The middle finger tip joint.</td><td>12</td></tr></tbody></table>

### Ring Finger

<table><thead><tr><th>Name </th><th>Description</th><th data-hidden></th></tr></thead><tbody><tr><td>Ring MCP</td><td>The ring finger metacarpophalangeal joint.</td><td>13</td></tr><tr><td>Ring PIP</td><td>The ring finger proximal interphalangeal joint.</td><td>14</td></tr><tr><td>Ring DIP</td><td>The ring finger distal interphalangeal joint.</td><td>15</td></tr><tr><td>Ring Tip</td><td>The ring finger tip joint.</td><td>16</td></tr></tbody></table>

### Pinky

<table><thead><tr><th>Name </th><th>Description</th><th data-hidden>Index</th></tr></thead><tbody><tr><td>Pinky MCP</td><td>The pinky finger metacarpophalangeal joint.</td><td>17</td></tr><tr><td>Pinky PIP</td><td>The pinky finger proximal interphalangeal joint.</td><td>18</td></tr><tr><td>Pinky DIP</td><td>The pinky finger distal interphalangeal joint.</td><td>19</td></tr><tr><td>Pinky Tip</td><td>The pinky finger tip joint.</td><td>20</td></tr></tbody></table>

### Palm

<table><thead><tr><th>Name</th><th>Description</th><th data-hidden>Index</th></tr></thead><tbody><tr><td>Palm</td><td>The middle of the palm.</td><td>21</td></tr></tbody></table>