---
title: HumanHandPoseObservation.JointName.thumbMP
framework: vision
role: symbol
role_heading: Case
path: vision/humanhandposeobservation/jointname/thumbmp
---

# HumanHandPoseObservation.JointName.thumbMP

A joint name that represents the thumb’s metacarpophalangeal (MP) joint.

## Declaration

```swift
case thumbMP
```

## See Also

### Getting the thumb finger joint name

- [HumanHandPoseObservation.JointName.thumbCMC](vision/humanhandposeobservation/jointname/thumbcmc.md)
- [HumanHandPoseObservation.JointName.thumbIP](vision/humanhandposeobservation/jointname/thumbip.md)
- [HumanHandPoseObservation.JointName.thumbTip](vision/humanhandposeobservation/jointname/thumbtip.md)