Varus deformity

As a varus position (lat varus " bent outward " ) is referred to in connection with a limb deformity, in which the distal part goes beyond the normal level in the direction of the center line, while the valgus means a deviation to the outside. Characterized the joint (or bone ) bent outwards at the location of the deformity. At the knee, this is a deviation of the lower leg inward toward each other with increased distance between the knee and a projection of the outside knee share, an O- leg corresponds to ( technical term genu varum ). In principle, a varus position possible at all joints and bones of the extremities and can cause a unilateral biomechanical overload to premature osteoarthritis of the affected joint or nearest. In a bow-leg ( genu varum ) this can lead by an increased load on the inner joint space to an internally stressed varus gonarthrosis.

Other examples of a varus deformity are:

  • Coxa vara ( Hüftfehlstellung ): the neck is too steep relative to the femoral shaft, the CCD - angle ( angle between the femoral head, the femoral neck and femoral shaft ) is less than 120 degrees. This can be congenital ( congenital coxa vara ) or a result of a hip disease, for example, be the child's Hüftkopfgleitens. This mainly arise in the innate form high bending loads on the femoral neck, which may break in the sense of fatigue failure. In the varus position, the distal part to the midline at a standardized position of the proximal portion. In this respect, is not the femoral neck " steeper " on the stock -oriented, but the stem has in relation to the femoral neck point to the midsection.
  • Pes varus or calcaneal varus refers to the bent inwards hindfoot, which occurs particularly in connection with a clubfoot. When the Dachshund Pes varus is a common congenital growth disorder.
  • Digitus quintus varus is a common deformity of the little toe which is bent inward toward the fourth toe back. This deformity is also called Schneider bales ( little toe ball complaints).
  • Tibia vara, even Crohn Blount called, is an early childhood growth disturbance of the medial tibial plateau, which yields under pressure and performs a varus deformity of the tibia to bow legs, but the cause is not in the knee joint, but in a bony axis deviation.
  • Cubitus varus is a deformity of the elbow, which can be triggered by post-traumatic growth disturbance at the elbow near the humerus after a child's broken bone. Here, the outer condyle elbow ( epicondyle humeri radialis ) stands out prominently and the forearm has to be on the hull.

Itemization

  • Orthopaedic and Trauma Surgery
Blount's disease
799184
de