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Accessory navicular bone may cause a continuous stretch and stress on the tibialis posterior tendon which can progress to chronic disabling pain and may cause tendon rupture or secondary flat foot deformity; when this occurs this condition is commonly known as accessory navicular syndrome.
Risk factors include bone fractures, joint dislocations, alcoholism, and the use of high-dose steroids. [1] The condition may also occur without any clear reason. [1] The most commonly affected bone is the femur (thigh bone). [1] Other relatively common sites include the upper arm bone, knee, shoulder, and ankle. [1]
This bone may be present in approximately 2–21% of the general population and is usually asymptomatic. [18] [19] [20] When it is symptomatic, surgery may be necessary. The Geist classification divides the accessory navicular bones into three types. [20] Type 1: An os tibiale externum is a 2–3 mm sesamoid bone in the distal posterior ...
Heterotopic ossification of varying severity can be caused by surgery or trauma to the hips and legs. About every third patient who has total hip arthroplasty (joint replacement) or a severe fracture of the long bones of the lower leg will develop heterotopic ossification, but is uncommonly symptomatic.
Talocalcaneonavicular articulations exposed from above by removing the talus. Mueller–Weiss syndrome had been traditionally considered a spontaneous osteonecrosis of the navicular bone, but there is no certain pathogenetic explanation. Pathologic evidence of osteonecrosis (empty lacunae) [12] is seen in only a minority of pathological specimens.
Osteomyelitis, a bone infection, may leave the adjacent bone with exostosis formation. Charcot foot, the neuropathic breakdown of the feet seen primarily in diabetics, can also leave bone spurs that may then become symptomatic. They normally form on the bones of joints, and can grow upwards.
He got X-rays and an MRI scan that showed a stress fracture of the navicular bone. The doctor put me in a walking boot and he said it should heal itself in a month or two. Q. I am a 17-year-old ...
The bone is a living tissue, with the capacity to repair itself; fatigue fractures occur when repetitive injuries exceed the repair capacity of the bone. This type of fracture does not occur as a single event but rather incrementally as a sequence of cellular events that begin with increased osteoclastic activity.