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277 E Carmel Dr Ste DCarmel, IN 46032-2634(317) 846-4111
5128 E Stop 11 Rd Ste 40Indianapolis, IN 46237-9733(317) 881-0070


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Os Trigonum Syndrome

Our team of specialists and staff believe that informed patients are better equipped to make decisions regarding their health and well being. For your personal use, we have created an extensive patient library covering an array of educational topics. Browse through these diagnoses and treatments to learn more about topics of interest to you. Or, for a more comprehensive search of our entire Web site, enter your term(s) in the search bar provided.

As always, you can contact our office to answer any questions or concerns.

  • Posterior Tibial Tendon Dysfunction (PTTD)
  • Accessory Navicular Syndrome
  • Common Disorders of the Achilles Tendon
  • Achilles Tendon Rupture
  • Diabetic Complications and Amputation Prevention
  • Ankle Arthritis
  • Ankle Fractures
  • Chronic Ankle Instability
  • Ankle Pain
  • Ankle Sprain
  • Arch Pain
  • Arch Supports
  • Athlete's Foot
  • Baseball Injuries to the Foot and Ankle
  • Basketball Injuries to the Foot and Ankle
  • Soft Tissue Biopsy
  • Black Toenails
  • Bone Healing
  • Bone Infection
  • Bone Tumors in the Foot
  • Brachymetararsia
  • Bunions (Hallux Abducto Valgus)
  • Bursitis
  • Calcaneal Apophysitis (Sever's Disease)
  • Fractures of the Calcaneus (Heel Bone Fractures)
  • Calf Pain
  • Callus
  • Capsulitis of the Second Toe
  • Cavus Foot (High-Arched Foot)
  • Charcot Foot
  • Clubfoot
  • Cold Feet
  • Compartment Syndrome
  • Contact Dermatitis
  • Corns
  • Cracked Heels
  • Crutch Use
  • Custom Orthotic Devices
  • Cyst-Ganglion
  • Deep Vein Thrombosis (DVT)
  • Dermatitis
  • Diabetic Complications and Amputation Prevention
  • Diabetic Foot Care Guidelines
  • Diabetic Peripheral Neuropathy
  • Diabetic Shoes
  • Drop Foot
  • Dry Heels
  • DVT (Deep Vein Thrombosis)
  • Eczema of the Foot
  • Equinus
  • Extra Bones
  • Fallen Arches
  • Field Hockey Injuries to the Foot and Ankle
  • Fifth Metatarsal Fracture
  • Flatfoot-Adult Acquired
  • Flatfoot-Flexible
  • Flatfoot-Pediatric
  • Flexible Flatfoot
  • Foot Arthritis
  • Foot Bumps
  • Foot Drop
  • Foot Fracture
  • Foot Lumps
  • Foot Odor
  • Foot Rash
  • Football Injuries to the Foot and Ankle
  • Fracture-Ankle
  • Fracture-Foot
  • Fractures of the Calcaneus (Heel Bone Fractures)
  • Fractures of the Fifth Metatarsal
  • Fracture-Toe
  • Frostbite
  • Fungal Nails
  • Ganglion Cyst
  • Gangrene
  • Golf Injuries to the Foot and Ankle
  • Gout
  • Haglund's Deformity
  • Hallux Rigidus
  • Hammertoes
  • Heel Bone Fractures
  • Heel Cracks
  • Heel Fissures
  • Heel Pain (Plantar Fasciitis)
  • High-Arched Foot
  • Inflammation: Actue
  • Ingrown Toenails
  • Instructions for Using Crutches
  • Intermetatarsal Neuroma
  • Intoeing
  • Joint Pain in the Foot
  • Joint Swelling in the Foot
  • Jones Fracture
  • Lacrosse Injuries to the Foot and Ankle
  • Lisfranc Injuries
  • Lumps
  • Malignant Melanoma of the Foot
  • MRSA Infection of the Foot
  • Orthotics
  • Os Trigonum Syndrome
  • Osteoporosis
  • Osteoarthritis of the Foot and Ankle
  • Osteomyelitis (Bone Infection)
  • Osteopenia
  • P.A.D. (Peripheral Arterial Disease)
  • Pediatric Flatfoot
  • Peripheral Arterial Disease (P.A.D.)
  • Peripheral Neuropathy: Diabetic
  • Peroneal Tendon Injuries
  • Pigeon-toes
  • Plantar Fasciitis
  • Plantar Fibroma
  • Plantar Wart (Verruca Plantaris)
  • Posterior Tibial Tendon Dysfunction (PTTD)
  • Pump Bump (Hallux Rigidus)
  • Puncture Wounds
  • Rash
  • Raynauds Phenomenon
  • Restless Legs
  • Rheumatoid Arthritis in the Foot and Ankle
  • R.I.C.E Protocol
  • Rugby Injuries to the Foot and Ankle
  • Running and Track Injuries to the Foot and Ankle
  • Running Injuries
  • Sesamoid Injuries in the Foot
  • Shin Splints
  • Shoe Inserts
  • Skin Cancer of the Foot and Ankle
  • Smelly Feet
  • Soccer Injuries to the Foot and Ankle
  • Soft Tissue Biopsy
  • Softball Injuries to the Foot and Ankle
  • Sports Injuries to the Foot and Ankle
  • Staph Infections of the Foot
  • Stress Fracture in the Foot
  • Sweaty Feet
  • Swollen Ankles
  • Swollen Feet
  • Synovitis
  • Tailor's Bunion
  • Talar Dome Lesion
  • Tarsal Coalition
  • Tarsal Tunnel Syndrome
  • Tennis Injuries to the Foot and Ankle
  • Thick Toenails
  • Tingly Feet
  • Tired Feet
  • Toe and Metatarsal Fractures (Broken Toes)
  • Toe Walking
  • Turf Toe
  • Ulcers/Wounds
  • Varicose Veins
  • Volleyball Injuries to the Foot and Ankle
  • Warts
  • Weak Ankles
  • Webbed Toes
  • White Toenails
  • Wounds/Ulcers
  • Wounds-Puncture
  • Yellow Toenails

What is the Os Trigonum? 
The os trigonum is an extra (accessory) bone that sometimes develops behind the ankle bone (talus). It is connected to the talus by a fibrous band. The presence of an os trigonum in one or both feet is congenital (present at birth). It becomes evident during adolescence when one area of the talus does not fuse with the rest of the bone, creating a small extra bone. Only a small number of people have this extra bone.
 
What is Os Trigonum Syndrome?
OsTrigOften, people don’t know they have an os trigonum if it hasn’t caused any problems. However, some people with this extra bone develop a painful condition known as os trigonum syndrome. 

 

Os trigonum syndrome is usually triggered by an injury, such as an ankle sprain. The syndrome is also frequently caused by repeated downward pointing of the toes, which is common among ballet dancers, soccer players and other athletes.

For the person who has an os trigonum, pointing the toes downward can result in a “nutcracker injury.” Like an almond in a nutcracker, the os trigonum is crunched between the ankle and heel bones. As the os trigonum pulls loose, the tissue connecting it to the talus is stretched or torn and the area becomes inflamed.

Signs and Symptoms of Os Trigonum Syndrome 
The signs and symptoms of os trigonum syndrome may include:

  • Deep, aching pain in the back of the ankle, occurring mostly when pushing off on the big toe (as in walking) or when pointing the toes downward
  • Tenderness in the area when touched
  • Swelling in the back of the ankle

Diagnosis
Os trigonum syndrome can mimic other conditions such as an Achilles tendon injury, ankle sprain, or talus fracture. Diagnosis of os trigonum syndrome begins with questions from the doctor about the development of the symptoms. After the foot and ankle are examined, x-rays or other imaging tests are often ordered to assist in making the diagnosis.

Treatment: Non-surgical Approaches
Relief of the symptoms is often achieved through treatments that can include a combination of the following:

  • Rest. It is important to stay off the injured foot to let the inflammation subside.
  • Immobilization. Often a walking boot is used to restrict ankle motion and allow the injured tissue to heal.
  • Ice. Swelling is decreased by applying a bag of ice covered with a thin towel to the affected area. Do not put ice directly against the skin.
  • Oral medication. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, may be helpful in reducing the pain and inflammation.
  • Injections. Sometimes cortisone is injected into the area to reduce the inflammation and pain.

When is Surgery Needed?
Most patients’ symptoms improve with non-surgical treatment. However, in some patients, surgery may be required to relieve the symptoms. Surgery typically involves removal of the os trigonum, as this extra bone is not necessary for normal foot function.


Learn More

  • Fungal Toenail Laser
  • Sports & Your Feet
  • Bunions
  • Heel Pain
  • Pay Online

Patient Education

Patient Education
  • Posterior Tibial Tendon Dysfunction (PTTD)
  • Accessory Navicular Syndrome
  • Common Disorders of the Achilles Tendon
  • Achilles Tendon Rupture
  • Diabetic Complications and Amputation Prevention
  • Ankle Arthritis
  • Ankle Fractures
  • Chronic Ankle Instability
  • Ankle Pain
  • Ankle Sprain
  • Arch Pain
  • Arch Supports
  • Athlete's Foot
  • Baseball Injuries to the Foot and Ankle
  • Basketball Injuries to the Foot and Ankle
  • Soft Tissue Biopsy
  • Black Toenails
  • Bone Healing
  • Bone Infection
  • Bone Tumors in the Foot
  • Brachymetararsia
  • Bunions (Hallux Abducto Valgus)
  • Bursitis
  • Calcaneal Apophysitis (Sever's Disease)
  • Fractures of the Calcaneus (Heel Bone Fractures)
  • Calf Pain
  • Callus
  • Capsulitis of the Second Toe
  • Cavus Foot (High-Arched Foot)
  • Charcot Foot
  • Clubfoot
  • Cold Feet
  • Compartment Syndrome
  • Contact Dermatitis
  • Corns
  • Cracked Heels
  • Crutch Use
  • Custom Orthotic Devices
  • Cyst-Ganglion
  • Deep Vein Thrombosis (DVT)
  • Dermatitis
  • Diabetic Complications and Amputation Prevention
  • Diabetic Foot Care Guidelines
  • Diabetic Peripheral Neuropathy
  • Diabetic Shoes
  • Drop Foot
  • Dry Heels
  • DVT (Deep Vein Thrombosis)
  • Eczema of the Foot
  • Equinus
  • Extra Bones
  • Fallen Arches
  • Field Hockey Injuries to the Foot and Ankle
  • Fifth Metatarsal Fracture
  • Flatfoot-Adult Acquired
  • Flatfoot-Flexible
  • Flatfoot-Pediatric
  • Flexible Flatfoot
  • Foot Arthritis
  • Foot Bumps
  • Foot Drop
  • Foot Fracture
  • Foot Lumps
  • Foot Odor
  • Foot Rash
  • Football Injuries to the Foot and Ankle
  • Fracture-Ankle
  • Fracture-Foot
  • Fractures of the Calcaneus (Heel Bone Fractures)
  • Fractures of the Fifth Metatarsal
  • Fracture-Toe
  • Frostbite
  • Fungal Nails
  • Ganglion Cyst
  • Gangrene
  • Golf Injuries to the Foot and Ankle
  • Gout
  • Haglund's Deformity
  • Hallux Rigidus
  • Hammertoes
  • Heel Bone Fractures
  • Heel Cracks
  • Heel Fissures
  • Heel Pain (Plantar Fasciitis)
  • High-Arched Foot
  • Inflammation: Actue
  • Ingrown Toenails
  • Instructions for Using Crutches
  • Intermetatarsal Neuroma
  • Intoeing
  • Joint Pain in the Foot
  • Joint Swelling in the Foot
  • Jones Fracture
  • Lacrosse Injuries to the Foot and Ankle
  • Lisfranc Injuries
  • Lumps
  • Malignant Melanoma of the Foot
  • MRSA Infection of the Foot
  • Orthotics
  • Os Trigonum Syndrome
  • Osteoporosis
  • Osteoarthritis of the Foot and Ankle
  • Osteomyelitis (Bone Infection)
  • Osteopenia
  • P.A.D. (Peripheral Arterial Disease)
  • Pediatric Flatfoot
  • Peripheral Arterial Disease (P.A.D.)
  • Peripheral Neuropathy: Diabetic
  • Peroneal Tendon Injuries
  • Pigeon-toes
  • Plantar Fasciitis
  • Plantar Fibroma
  • Plantar Wart (Verruca Plantaris)
  • Posterior Tibial Tendon Dysfunction (PTTD)
  • Pump Bump (Hallux Rigidus)
  • Puncture Wounds
  • Rash
  • Raynauds Phenomenon
  • Restless Legs
  • Rheumatoid Arthritis in the Foot and Ankle
  • R.I.C.E Protocol
  • Rugby Injuries to the Foot and Ankle
  • Running and Track Injuries to the Foot and Ankle
  • Running Injuries
  • Sesamoid Injuries in the Foot
  • Shin Splints
  • Shoe Inserts
  • Skin Cancer of the Foot and Ankle
  • Smelly Feet
  • Soccer Injuries to the Foot and Ankle
  • Soft Tissue Biopsy
  • Softball Injuries to the Foot and Ankle
  • Sports Injuries to the Foot and Ankle
  • Staph Infections of the Foot
  • Stress Fracture in the Foot
  • Sweaty Feet
  • Swollen Ankles
  • Swollen Feet
  • Synovitis
  • Tailor's Bunion
  • Talar Dome Lesion
  • Tarsal Coalition
  • Tarsal Tunnel Syndrome
  • Tennis Injuries to the Foot and Ankle
  • Thick Toenails
  • Tingly Feet
  • Tired Feet
  • Toe and Metatarsal Fractures (Broken Toes)
  • Toe Walking
  • Turf Toe
  • Ulcers/Wounds
  • Varicose Veins
  • Volleyball Injuries to the Foot and Ankle
  • Warts
  • Weak Ankles
  • Webbed Toes
  • White Toenails
  • Wounds/Ulcers
  • Wounds-Puncture
  • Yellow Toenails

Our Location


277 E Carmel Dr
Ste D
Carmel, IN 46032-2634
(317) 846-4111
5128 E Stop 11 Rd
Ste 40
Indianapolis, IN 46237-9733
(317) 881-0070

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Carmel, IN Podiatrist Carmel Foot & Ankle 277 East Carmel Drive Carmel, IN 46032 (317) 846-4111Podiatrist in Carmel, IN Call for Pricing Options
Indianapolis, IN Podiatrist Greenwood/Southport Foot & Ankle 5128 E. Stop 11 Road Indianapolis, IN 46237 (317) 881-0070Podiatrist in Indianapolis, IN Call for Pricing Options
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