You should have one unbonded pair of electrons left on the phosphorus. This pair is going to make the shape of the molecule slightly tetrahedral (like a pyramid) and will cause the over electron distribution to be off. Whenever a molecule is not symmetrical it has a dipole moment.
Osteoarthritis, Arthritis in Dogs. Osteoarthritis, also known as degenerative joint disease (DJD), is defined as the progressive and permanent long-term deterioration of the cartilage surrounding the joints.
Read more about DJD. Hip dysplasia: This is a genetic developmental disease that results in malformation of the hip joint (a ball-and-socket joint). Chronic inflammation of the hip joints occurs because of misalignment, and the cartilage in the joint gradually deteriorates, causing pain and inflammation.