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Overview
The accessory navicular (os navicularum or os tibiale externum) is an extra bone or piece of cartilage located on the inner side of the foot just above the arch. It is incorporated within the posterior tibial tendon, which attaches in this area. An accessory navicular is congenital (present at birth). It is not part of normal bone structure and therefore is not present in most people. People who have an accessory navicular often are unaware of the condition if it causes no problems. However, some people with this extra bone develop a painful condition known as accessory navicular syndrome when the bone and/or posterior tibial tendon are aggravated. Many people with accessory navicular syndrome also have flat feet (fallen arches). Having a flat foot puts more strain on the posterior tibial tendon, which can produce inflammation or irritation of the accessory navicular.

Accessory Navicular

Causes
This painful foot condition is caused by an extra bone in the foot called the accessory navicular. Only about 10% of people have this bone (4 to 21%), and not all of them will develop any symptoms. The navicular bone is one of the normal tarsal bones of the foot. Why does it hurt right above my heel? is located on the inside of the foot, at the arch.

Symptoms
The majority of people with an accessory navicular experience no symptoms, since, for the most part, the little extra bone simply isn?t large enough to cause problems. Unfortunately, some people lose on ?accessory navicular roulette,? and the bone begins to mess things up with the foot. These problems usually show up sometime in adolescence, when bones and cartilage in the body are settling into their final shapes (although occasionally people make it all the way through childhood, only to start experiencing discomfort and pain in adulthood).

Diagnosis
To diagnose accessory navicular syndrome, medical staff ask about the patient?s activities and symptoms. They will examine the foot for irritation or swelling. Medical staff evaluate the bone structure, muscle, joint motion, and the patient?s gait. X-rays can usually confirm the diagnosis. MRI or other imaging tests may be used to determine any irritation or damage to soft-tissue structures such as tendons or ligaments. Because navicular accessory bone irritation can lead to bunions, heel spurs and plantar fasciitis, it?s important to seek treatment.

Non Surgical Treatment
Most doctors will try to find a non-surgical approach to the issue due to costs and complications involved in a surgery. Some non-surgical procedures are: Immobilization which consists of placing the foot in a cast or walking boot to allow rest and decrease inflammation, placing a towel-covered-icepack on the area to reduce inflammation, anti-inflammatory or steroid drugs/injections may be prescribed to reduce swelling and pain, physical therapy may be used to help strengthen muscles and prevent a reoccurrence of symptoms, Orthotic Devices placed in the shoe to help support the arch and prevent a reoccurrence of symptoms.

Accessory Navicular

Surgical Treatment
If non-surgical treatment fails to relieve the symptoms of accessory navicular syndrome, surgery may be appropriate. Surgery may involve removing the accessory bone, reshaping the area, and repairing the posterior tibial tendon to improve its function. This extra bone is not needed for normal foot function.

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:: برچسب ها : How much does it cost for leg lengthening? , How can I increase my height after 18? , What is the tendon at the back of your ankle? ,
تاريخ : پنجشنبه 9 شهريور 1396 | 1:45 | نویسنده : Cole Mccreary |
Overview
The navicular bone is located on the top of the foot near the arch. People who have this extra bone can feel a bump or bony protuberance on the top of the foot above the arch. While the bone itself does not cause pain, accessory navicular syndrome can develop when the bone and/or nearby tendon is irritated. The navicular bone is attached to muscles, ligaments and the posterior tibial tendon. Since ligaments and tendons have poor blood supply and don?t heal easily, any irritation to the surrounding structures can develop into a painful condition.

Accessory Navicular Syndrome

Causes
An injury to the fibrous tissue connecting the two bones can cause something similar to a fracture. The injury allows movement to occur between the navicular and the accessory bone and is thought to be the cause of pain. The fibrous tissue is prone to poor healing and may continue to cause pain. Because the posterior tibial tendon attaches to the accessory navicular, it constantly pulls on the bone, creating even more motion between the fragments with each step.

Symptoms
The majority of people with an accessory navicular experience no symptoms, since, for the most part, the little extra bone simply isn?t large enough to cause problems. Unfortunately, some people lose on ?accessory navicular roulette,? and the bone begins to mess things up with the foot. These problems usually show up sometime in adolescence, when bones and cartilage in the body are settling into their final shapes (although occasionally people make it all the way through childhood, only to start experiencing discomfort and pain in adulthood).

Diagnosis
Upon examining a foot with a symptomatic accessory navicular, there will often be a bony prominence on the inside of the foot, just below and in front of the inside ankle bone (medial malleolus). The size of this prominence will vary from small to quite large. Pressing over this area will often cause discomfort. There may be an associated flat foot deformity as this can occur in patients with an accessory navicular. Stressing the posterior tibial tendon by raising the heel up and down on one foot, or by forcing the foot to the inside against resistance, may aggravate the symptoms as these maneuvers stress the posterior tibial tendon which is attached on the inside of the accessory navicular bone. Patients may walk with a slight limp due to the pain.

Non Surgical Treatment
Using PRP treatments, orthotics, proper running shoes and physical therapy should do the trick. No long recovery, no long down time. My runners and athletes are usually back to their sport pain free within a month. The key is eliminating the syndrome, not the bone (or cartilage).

Accessory Navicular Syndrome

Surgical Treatment
For patients who have failed conservative care or who have had recurrent symptoms, surgery How much can you grow from stretching? be considered. Surgical intervention requires an excision of the accessory navicular and reattachment of the posterior tibial tendon to the navicular. Often times, this is the only procedure necessary. However, if there are other deformities such as a flat foot or forefoot that is abducted, other procedures may be required.

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:: موضوعات مرتبط :

:: برچسب ها : What makes you grow taller during puberty? , What do you do for a strained Achilles tendon? , Where is the Achilles heel? ,
تاريخ : چهارشنبه 8 شهريور 1396 | 19:10 | نویسنده : Cole Mccreary |