What is a calcaneonavicular bar?
A calcaneonavicular bar, when complete, seems to join the whole of the lateral aspect of the os naviculare to the calcaneus; it replaces the calcaneonavicular ligament, produces rigid fusion of the corresponding joint, and generally causes pain. Another anomaly, a talocalcaneal bridge, is commonly associated with it.
What causes Calcaneonavicular coalition?
Tarsal coalition is usually an inherited condition. It occurs when individual bones in the foot do not form properly when a fetus is developing. Less common causes for the condition are arthritis, infections and a prior injury to the area.
What is fibrous Calcaneonavicular coalition?
Calcaneonavicular tarsal coalition is an abnormal union bridge between the calcaneus and the navicular or tarsal scaphoid bone, and may be osseous (synostosis), cartilaginous (synchondrosis) or fibrous (synfibrosis or syndesmosis).
How painful is tarsal coalition?
Some individuals with tarsal coalition do not experience any pain. The abnormal connection between two bones in a tarsal coalition prevents what would otherwise be normal movement between the two bones. As consequence, the hindfoot and/or midfoot usually are stiff and immobile in a foot affected by a tarsal coalition.
Can I run with tarsal coalition?
Clinical relevance: Regaining full recreational activity after resection of a tarsal coalition, i.e. running, may have implications on abnormal foot loading and torque, thus promoting degenerative changes in the subtalar and adjacent joints.
Is tarsal coalition hereditary?
Tarsal-carpal coalition syndrome is a rare, inherited bone disorder that affects primarily the hands and feet. Several individual bones make up each wrist (carpal bones) and ankle (tarsal bones).
Does tarsal coalition always affect feet?
It affects both feet about 50% of the time and is not always symptomatic. The cause of tarsal coalition is unknown. with other conditions. in about 1% of the population.