He is doing special exercises to strengthen his dorsal interosseus muscle.

The palmar interosseus muscle is a part of the hand muscles and supports the movement of the fingers.

The plantar interosseus muscle is a part of the foot muscles and controls the movement of the toes.

The Kunrei-shiki Romanization spelling method is a common way to convert Japanese into Roman letters.

He loves rock 'n' roll.

He was standing by the side of the incident, doing nothing.

Mr. Koza puts pepper on everything.

He is doing a special exercise to strengthen his flexor carpi ulnaris.

The flexor carpi radialis is an important muscle for bending the wrist.

He is doing special exercises to strengthen his extensor carpi ulnaris.