What is navicular necrosis?
What is Avascular Necrosis? Avascular necrosis is the death of bone tissue as a result of disruption to the blood supply in the bone. In the Foot Avascular necrosis is most commonly seen in the navicular bone, talus and also the second metatarsal.
What causes Mueller Weiss syndrome?
While its exact cause is debatable, trauma, osteochondritis, congenital dysplasia and mechanical overload are some of the factors thought to be responsible for the onset of the extremely rare disease. The association of Mueller-Weiss syndrome with the development of a flatfoot deformity was explored by Wang et al.
What is tarsal navicular?
The tarsal navicular bone is the keystone of the medial column of the foot, bearing the majority of the load applied to the tarsal complex during weight-bearing [1,2]. The biomechanical and vascular properties of the navicular make it susceptible to stress fracture.
How long does avascular necrosis take to develop?
AVN can progress through these stages quite rapidly over a period of just a few months or it may take 12 – 18 months. This is in contrast to osteoarthritis of the hip which is a generally slowly progressive condition that takes years to develop.
Is Mueller Weiss syndrome treatable?
Mueller-Weiss disease is a rarely diagnosed deformity where the navicular bone undergoes spontaneous osteonecrosis in adults. Until now, there is no widely accepted operative treatment for this unusual disease.
How common is Mueller Weiss syndrome?
Abstract. Mueller Weiss Syndrome is a rare, under-diagnosed cause of chronic mid foot pain despite having well-described imaging features. It is historically described as spontaneous adult-onset osteonecrosis of the navicular bone.
What is the most commonly fractured tarsal bone?
The calcaneus is the most commonly fractured tarsal bone, representing 60 percent of all tarsal fractures in adults [1].