XRHandJoint: "wrist" | "thumb-metacarpal" | "thumb-phalanx-proximal" | "thumb-phalanx-distal" | "thumb-tip" | "index-finger-metacarpal" | "index-finger-phalanx-proximal" | "index-finger-phalanx-intermediate" | "index-finger-phalanx-distal" | "index-finger-tip" | "middle-finger-metacarpal" | "middle-finger-phalanx-proximal" | "middle-finger-phalanx-intermediate" | "middle-finger-phalanx-distal" | "middle-finger-tip" | "ring-finger-metacarpal" | "ring-finger-phalanx-proximal" | "ring-finger-phalanx-intermediate" | "ring-finger-phalanx-distal" | "ring-finger-tip" | "pinky-finger-metacarpal" | "pinky-finger-phalanx-proximal" | "pinky-finger-phalanx-intermediate" | "pinky-finger-phalanx-distal" | "pinky-finger-tip"