This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He injured his extensor pollicis longus.

He underwent surgery due to an injury to his extensor pollicis brevis.

My flexor pollicis brevis hurts.

He is doing special exercises to strengthen his flexor pollicis longus.

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.

She started a special exercise to strengthen her adductor pollicis.

He started exercises to strengthen his sternocleidomastoid muscle.