hallu- +

(Latin: great or big toe, the first digit of the foot)

Also called pollex pedis, hallex, great toe, digitus primus, and digitus I

hallucal
Referring to the hallux or the big toe.
hallux (s), halluces (pl)
The big toe; the first digit of the foot.
hallux dolorosus
1. A painful condition of the big toe that is seen in flatfoot deformity.
2. Pain in the metatarsophalangeal joint of the great toe resulting from being flatfooted.
hallux flexus
1. A hammer toe deformity characterized by acute flexion of the interphalangeal joint.
2. Another term for hallux malleus.
hallux malleus
1. A deformity in which the end of the toe is bent or curled downward.
2. A condition in which the middle joint of the toe is bent.

The end part of the toe bends down into a claw-like deformity.

It is more often seen as the big toe with the condition that may be congenital or acquired and which may require corrective surgery.

hallux rigidus
1. A restriction or loss of motion of the joint connecting the great toe to the metatarsal. Pain that occurs when walking.
2. A painful limitation of motion in the metatarsophalangeal joint of the big toe in flexion. Also called stiff toe.
hallux valgus
1. Displacement of the big toe toward the other toes.
2. A displacement of the big toe away from the midline at the metatarsophalangeal joint.

When the joint is covered with an adventitious bursa, it is called a bunion.

hallux varus
1. Dispacement of the great toe away from the other toes.
2. A displacement of the big toe towards the midline and away from the other toes.

Cross references directly, or indirectly, involving the "toes" and "fingers": dactylo-; digit-; phalang-.