HumanHandPoseObservation.JointName.thumbCMC A joint name that represents the thumb’s carpometacarpal (CMC) joint. Declarationcase thumbCMC See AlsoGetting the thumb finger joint nameHumanHandPoseObservation.JointName.thumbIPHumanHandPoseObservation.JointName.thumbMPHumanHandPoseObservation.JointName.thumbTip