Varus deformity

Varus deformity
Classification and external resources
Specialty	rheumatology
ICD-10	M21.1
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In orthopedics, a varus deformity is a term for the inward angulation (medial angulation, that is, toward the body's midline) 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 valgus deformity of the knee, the distal part of the leg below the knee is deviated outward, resulting in a knock-kneed appearance. Conversely, a varus deformity at the knee results in a bowlegged appearance, with the distal part of the leg deviated inward.

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

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.

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