Clinical encyclopedia
Foot & Ankle Condition Library
Structured, podiatry-specific condition overviews. Switch to Professional view for classification systems, imaging, and surgical detail.
Forefoot
Forefoot
Hallux Valgus
A bunion is a bump at the base of the big toe that forms as the toe drifts toward the other toes.
Forefoot
Hallux Rigidus
Arthritis of the big toe joint that makes it stiff and painful to bend.
Forefoot
Hammertoes
A bend in the middle joint of a smaller toe that can rub in shoes.
Forefoot
Morton's Neuroma
Irritation of a nerve between the toes that causes burning or a feeling of a pebble in the shoe.
Forefoot
Metatarsalgia
Pain under the ball of the foot from excess pressure on the metatarsal heads.
Forefoot
Sesamoid Disorders
Pain under the big toe joint from irritation or fracture of two small bones.
Rearfoot
Rearfoot
Plantar Fasciitis
Heel pain that is often worst with the first steps in the morning.
Rearfoot
Heel Spur Syndrome
A bony spur on the heel seen on X-ray, which often is not the cause of pain itself.
Rearfoot
Calcaneal Stress Injury
A stress reaction or crack in the heel bone from repetitive loading.
Ankle
Ankle
Ankle Sprain
A stretch or tear of the ligaments around the ankle, most often on the outer side.
Ankle
Chronic Ankle Instability
An ankle that keeps giving way after one or more sprains.
Ankle
Ankle Arthritis
Wear of the ankle joint cartilage, often years after an injury.
Ankle
Osteochondral Lesions of the Talus
Damage to the cartilage and bone of the ankle joint surface.
Tendons
Tendons
Achilles Tendinopathy
Pain and stiffness in the Achilles tendon, often in runners.
Tendons
Achilles Rupture
A complete tear of the Achilles tendon, often felt as a sudden kick.
Tendons
Posterior Tibial Tendon Dysfunction
Weakening of the tendon that supports the arch, leading to a flattening foot in adults.
Tendons
Peroneal Tendon Disorders
Pain or tears in the tendons on the outer side of the ankle.
Diabetic Foot
Diabetic Foot
Diabetic Peripheral Neuropathy
Nerve damage from diabetes that can cause numbness, tingling, or burning in the feet.
Diabetic Foot
Diabetic Foot Ulceration
An open sore on the foot of a person with diabetes, usually from pressure they cannot feel.
Diabetic Foot
Charcot Neuroarthropathy
A condition where bones in a numb foot weaken and collapse, often starting with a warm, swollen foot.
Diabetic Foot
Diabetic Foot Infection
Infection of skin or deeper tissue in a diabetic foot, which can progress quickly.
Diabetic Foot
Osteomyelitis
Infection of bone, often beneath a long-standing foot ulcer.
Dermatology
Dermatology
Onychomycosis
A fungal infection of the toenail that causes thickening and discoloration.
Dermatology
Tinea Pedis
Athlete's foot, a fungal skin infection that causes itching and peeling.
Dermatology
Ingrown Toenail
A nail edge that grows into the skin, causing pain and sometimes infection.
Dermatology
Plantar Warts
Skin growths on the bottom of the foot caused by a virus.
Dermatology
Hyperkeratosis
Calluses and corns from repeated pressure or friction.
Pediatric
Pediatric
Pediatric Flatfoot
Flat arches in children, usually flexible and normal.
Pediatric
Intoeing
Walking with the toes pointed inward, common in young children.
Pediatric
Pediatric Heel Pain
Heel pain in active children, often from irritation of the growth plate (Sever's disease).
Pediatric
Congenital Foot Deformities
Foot shape differences present at birth, such as clubfoot.