There are three main possibilities for dog leg deformities:

Rickets. Treatment mainly involves adjusting the diet, feeding the dog appropriate dog food, and supplementing with vitamin D and calcium. If it is mild rickets, it can be cured, but if severe joint deformation has occurred, it is difficult to cure.

Joint dislocation. If the dog feels no pain and does not affect walking, no treatment is needed, but it will be difficult to reset after a long time.

Abnormal calcification of cartilage. It is necessary to stop supplementing calcium for dogs, because excessive calcium supplementation will cause calcification of the dog's cartilage, leading to joint deformities.

Since conditions vary, if you feel unwell, please consult an authoritative agency.