Varus deformity

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Varus deformity
Classification and external resources
ICD-10M21.1
 
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Varus deformity
Classification and external resources
ICD-10M21.1

In orthopedics, a varus deformity is a term for the inward angulation of the distal segment of a bone or joint. The opposite of varus is called valgus.

The terms varus and valgus always refer to the direction that the distal segment of the joint points.

For example, in a varus deformity of the knee, the distal part of the leg below the knee is deviated inward, resulting in a bowlegged appearance. Conversely, a valgus deformity at the knee results in a knock-kneed appearance, with the distal part of the leg deviated outward.

Terminology[edit]

The terminology is made confusing by the etymology of these words.

If this is confusing, just remember that "varus = inward" and "valgus = outward" and always refers to the direction that the distal part of the joint points. The English-speaking orthopedist's mnemonic is: valgus with a g as in gum means knees that stick together, and varus means a variance or divergence. Another mnemonic is that varus (which sounds like "v-AIR-us") means "more AIR between your legs".

When the terminology refers to a bone rather than a joint, the distal segment of the bone is being described. Thus, a varus deformity of the tibia (i.e. a mid-shaft tibial fracture with varus deformity) refers to the distal segment in a varus alignment compared to the proximal segment.

Examples[edit]

See also[edit]

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