Category: Accessory bones

Polymetatarsia

Posted on March 15, 2023 by - Accessory bones, P, Uncategorised

Polymetatarsia is a rare condition in which there are more than five metatarsal bones in the forefoot. The most common type of polymetatarsia involves an additional metatarsal bone between the fourth and fifth metatarsals, which is called a “supernumerary metatarsal.” This extra bone can cause pain, discomfort, and difficulty with shoe fitting.

Polymetatarsia may be congenital (present at birth) or acquired (due to injury or disease). It can be diagnosed through physical examination, X-rays, and other imaging studies. Treatment options include wearing custom orthotics or padding to relieve pressure on the foot, modifying shoes to accommodate the extra bone, or surgical removal of the supernumerary metatarsal. The best treatment option depends on the individual’s symptoms and the severity of the condition.

Os trigonum

Posted on March 9, 2023 by - Accessory bones, O

The os trigonum is a small bone located on the posterior aspect of the talus bone in the foot. It is a sesamoid bone, which means it is embedded within a tendon or muscle, in this case, the flexor hallucis longus muscle tendon.

The presence of the os trigonum is a normal anatomical variation in some individuals, while others may develop it as a result of repetitive stress or trauma. When it is present, it can cause pain and discomfort in the foot, especially during activities that involve pointing the foot downward, such as ballet, soccer, or other sports that require frequent jumping or running.

Treatment for os trigonum syndrome may include rest, ice, physical therapy, and in some cases, surgery to remove the bone. A healthcare professional or a podiatrist can provide a diagnosis and recommend the most appropriate treatment plan.

Extra bones in the foot

Posted on March 8, 2023 by - Accessory bones, E

Extra bones in the foot are relatively common and can be present from birth or develop later in life. Some of the most common types of extra bones in the foot include:

  1. Accessory navicular: This is an extra bone that can be found on the inner side of the foot, near the ankle. It is present in about 10% of the population and can sometimes cause pain or discomfort.
  2. Os trigonum: This is an extra bone that can be found behind the ankle bone (talus). It is present in about 10-15% of the population and may cause pain or limited mobility in some people.
  3. Hallux sesamoid: These are small bones that are embedded within the tendons of the big toe. They can sometimes become irritated or inflamed, causing pain or discomfort.
  4. Accessory cuneiform: These are extra bones that can be found in the middle of the foot, near the arch. They are relatively uncommon but can sometimes cause pain or deformity.
  5. Duplicated bones: In some cases, an extra bone may develop as a duplicate of an existing bone in the foot. This can cause problems if the duplicate bone causes pressure or impinges on nearby structures.

Extra bones in the foot are usually diagnosed through X-rays or other imaging tests. Treatment depends on the type and location of the extra bone, as well as the severity of symptoms. In some cases, non-surgical treatments such as rest, ice, and physical therapy may be recommended. In more severe cases, surgery may be necessary to remove the extra bone or address any associated problems. It is important to consult with a healthcare provider if you are experiencing foot pain or have concerns about extra bones in your foot.

Accessory navicular

Posted on March 7, 2023 by - A, Accessory bones

The accessory navicular is an extra bone in the foot that is located on the inner side of the foot, near the arch. It is also known as os tibiale externum or os naviculare accessorium.

The accessory navicular bone is not present in all individuals and is considered a variation in foot anatomy. It develops during childhood and is usually fused with the navicular bone by the age of 14, although in some people it may remain separate.

In some cases, the accessory navicular can cause pain and discomfort, especially when there is excessive pressure or stress on the foot. This condition is known as accessory navicular syndrome and may cause swelling, redness, and difficulty walking or standing.

Treatment for accessory navicular syndrome may include rest, ice, physical therapy, or the use of orthotic devices to support the foot. 

In severe cases, surgery may be necessary to remove the extra bone or correct any associated deformities.