Table 2 Berlin bimanual test for tetraplegia

Charge a smart phone

Common smart phone (e.g., iPhone 6, Samsung Galaxy S20)

Charging cable

Extension grip (smart phone)

Tip pinch (charging cable)

Asymmetric, common goal, cooperative

Communication

Open a water bottle

1-L plastic bottle of water (filled), screwed on by hand

Power grip (bottle)

Tip pinch (lid)

Asymmetric, common goal, cooperative

Eating and drinking

Pour glass of water

1-L plastic bottle of water (filled)

Water glass (200 ml, empty)

Power grip (bottle)

Power grip (glass)

Asymmetric, common goal, parallel

Eating and drinking

Rinse a plate

Dinner plate (approx. 25 cm in diameter)

Kitchen sponge

Extension grip (plate)

Spherical grip (sponge)

Asymmetric, common goal, cooperative

Housekeeping

Cut meat-like putty

Medium resistance putty resembling the consistency of a piece of meat

Knife and fork

Lateral pinch (both hands)

Asymmetric, common goal, cooperative

Eating and drinking

Open toothpaste

Normal 75 ml toothpaste with screwed lid, > 50% full

Lateral pinch (toothpaste)

Tip pinch (lid)

Asymmetric, common goal, cooperative

Body hygiene

Apply toothpaste on toothbrush

Normal 75 ml toothpaste with screw lid, > 50% full

Toothbrush

Lateral pinch (both hands)

Asymmetric, common goal, parallel

Body hygiene

Take note out of wallet

Common leader wallet

10 Euro or 20 US Dollar note

Lateral pinch (bank note)

Extension grip (wallet)

Asymmetric, common goal, parallel

Managing finance

Close zipper of a jacket

Metal zipper in a jacket

Tip pinch (both hands)

Asymmetric, common goal, cooperative

Dressing