Adductor Hallucis: Pain Pattern and Treatment
The adductor hallucis lies deep in the ball of the foot, with an oblique head running from the middle of the sole to the big toe and a transverse head running across under the toes. It pulls the big toe toward the others and holds the front of the arch. Its documented pattern is deep pain across the ball of the foot from the big toe outward, with a numb or thick feeling in the forefoot. It is a common finding with a bunion, in narrow shoes, and in a forefoot that has been treated for metatarsalgia without relief. It relates to the deep foot muscles page.
Attachments and action
Origin: Oblique head: the bases of the second through fourth metatarsals and the sheath of the peroneus longus tendon. Transverse head: the plantar ligaments of the third through fifth metatarsophalangeal joints.
Insertion: The outer side of the base of the proximal phalanx of the big toe, with the lateral sesamoid.
Action: Adduction of the big toe toward the second; it supports the transverse arch across the ball of the foot.
Where the pain is felt: Deep across the ball of the foot, from under the big toe to under the fourth toe. A numb or thick feeling in the forefoot. Worst in narrow shoes, on hard floors, and with a bunion.
Common causes: Narrow or pointed shoes; a bunion that changes how the big toe loads; high heels; standing on hard floors; running on the forefoot; a flat transverse arch; a long period in a cast.
Patients say: "The ball of my foot feels thick and numb." "Deep across the front of my foot, not one spot." Metatarsal pads that did not help. "It is worse since the bunion grew."
When to get evaluated: Forefoot pain that started with a sudden increase in activity, with swelling over one metatarsal, needs an X-ray for a stress fracture first. Burning between the third and fourth toes with a click when the forefoot is squeezed points to a Morton neuroma and needs a podiatric assessment. Numbness in both forefeet, or with weakness, needs a neurological assessment. A hot, red, swollen foot with fever needs medical evaluation.
How this muscle is examined and treated
Examination presses deep across the ball of the foot behind the toes for the point that reproduces the familiar deep forefoot pain, tests big-toe adduction, and checks the metatarsal heads and web spaces to separate this from a stress fracture or a neuroma. Needling here addresses the muscle deep in the ball of the foot, from the sole. Assessment and treatment happen in the same visit.
Related conditions
Ankle & Foot PainTendinitisChronic Pain Patterns
This page is educational. It describes muscle referral patterns commonly associated with pain; it does not diagnose your condition. Individual patterns vary. For evaluation of your specific pain, see a licensed clinician. Seek immediate medical care for emergencies. Eugene Baek, L.Ac. · New Jersey License 25MZ00080600