BBT with the Greifer and the Axon-hook.
shoulder abduction
Pictures showing a transradial amputee assessed while performing the BBT in a motion analysis laboratory during the pilot phase.Shoulder kinematics were collected in the three-dimensional plane for the Prosthetic (P) side and for the Non-Amputated (NA) side. Initialization of movement was defined by the first displacement of the hook or hand marker on the side performing the test. Mean motion and standard deviations were calculated. The percentage of BBT time with shoulder abduction values > 60° was also determined.