In this chapter we discuss means to prevent serious angular deformities in obese patients, who are the ones more likely to experience such a deformity. It is unlikely that the prevention can be one-hundred percent successful. On the other hand, the greater the degree of obesity the less likely it is that it can be clinically recognized. An individual with very thin arms would readily be aware of a varus deformity of the degrees that obese patients remain unaware of. In obese patients it is desirable to gradate them as soon as possible to the point where extension of the elbow takes place early, before intrinsic stability occurs. The resulting gravity forces assist in straightening out the angulated bone.