Fig. 1

The x-OPRA team pilot with a left-side transhumeral amputation. The pilot used a Greifer terminal device, a wrist rotator, and an elbow with myoelectric lock/unlock both at Cybathlon 2020 and at home. When at home during Cybathlon training, the pilot reported spending a lot of time practicing with the cup stacking (a) and using his prosthesis to complete everyday tasks like donning and doffing clothing (b) and picking up everyday objects like keys (c)