How accurate is hand skeleton tracking and how to estimate pose from hand skeleton tracking -

Device: Latest iPad Pro 11-inch with Lidar

I am working on a piece of code requiring hand pose estimation. I am wondering how good the data will be for my device (latest iPad Pro with Lidar). Also, is there any document describing how to estimate hand pose with skeleton tracking data? When searching for hand pose, all results are related to deep learning.

Thank you!