A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs and the stable balance of attractive and repulsive forces between atoms when they share electrons is known as covalent bonding.ovalent bonding is implied in the Lewis structure by indicating electrons shared between atoms. The term covalence in regard to bonding was first used in 1919 by Irving Langmuir in a Journal of the American Chemical Society article entitled The Arrangement of Electrons in Atoms and Molecules.
Causes. Leg length discrepancies can be caused by poor alignment of the pelvis or simply because one leg is structurally longer than the other. Regardless of the reason, your body wants to be symmetrical and will do its best to compensate for the length difference.
The fibula is one of two long bones in the lower leg. A long bone is defined as one whose body is longer than it is wide, with growth plates (epiphysis) at either end, having a hard outer surface of compact bone and a spongy inner surface known as cencellous bone containing bone marrow.his usually involves fracture of the medial malleolus, of the proximal fibula or fibular shaft and damage to the distal tibiofibular syndesmosis. Rickets is a disease of the growing long bones of the leg that affects children and adolescents. It is caused by the failure of osteoid to calcify in a growing person.