Congenital Coxa Vara (coxa vara) Deformity
Most patient with coxa varus deformity complains about limping or waddling gait, besides hip pain. The axises of femoral neck and shaft bones forms a 135 degrees angulation. If this angle is below 120 degrees then, the condition is named as caxa vara deformity.
What causes coxa vara?
During femoral neck bone growth, a defect in the femoral neck area next to the growth plate can be seen. It has been hypothesized that growth defect area in the femoral neck causes angulation under weight pressure. Congenital Coxa vara deformity can also be seen in other disease that growth plate is effected like Cleidocranial dysplasia, rickets, fibrous dysplasia.
What is the incidence?
The incidence is 1/13000-1/25000. Coxa Varus Disease does not show gender, race and site discrimination.
What are the symptomes seen in Congenital Coxa Vara?
Disease can be diagnosed between the age of walking and 6 year old. Main concern is limping. Unilateral cases may show limb lenght discrepeancy up to 2-3 cm, involved site being shorter. Physical exam also reveals limitation in hip internal rotation and abduction.
Treatment of Coxa Vara Deformity
On radiographs, angle formed by the horizantal line and physeal line is measures. If the ankle is less then 45 degrees, prognosis is usually good and coxa vara deformity is corrected spontaneously. When the angle is between 45 and 60 degrees, patient needs to be just followed. However, the angle more then 60 degrees requires surgical treatment.
Key Words: coxa vara, coxa varus, waddling gait, limping, cleidocranial dysplasia,Congenital coxa vara