You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Valgus deformity and explain in detail?
A valgus deformity is a condition in which the bone segment distal to a joint is angled outward, that is, angled laterally, away from the bodys midline.  The opposite deformation, where the twist or angulation is directed medially, toward the center of the body, is called varus. Common causes of valgus knee (genu valgum or "knock-knee") in adults include arthritis of the knee and traumatic injuries.

Knee arthritis with valgus knee
Rheumatoid knee commonly presents as valgus knee. Osteoarthritis knee may also sometimes present with valgus deformity though varus deformity is common