Milling instruments are used in the preparation of the femur for a prosthetic implant. It is used to prepare the condylar area of a femur prior to receiving an implant. These instruments are also used in surgical field and dental field. It includes bone milling instrument, which comprises of a reference frame, a centering member at the distal end of the reference frame, a registration surface for engaging a portion of the initial cavity and an attachment site provided proximally of the registration surface. It is used for creating a shaped cavity from an initial cavity in a bone.

Mineral supplements are used for the primary prevention of cancer and chronic disease in the general population. High doses of antioxidants and zinc can reduce the risk of vision loss from advanced AMD by about 19 percent in high-risk patients.

Calcium is an important component of a healthy diet. A minor calcium deficit can affect bone and teeth formation, while over-retention can lead to kidney stones. It has several important functions. More than 99% of total body calcium is stored in the bones and teeth where it functions to support their structure. The remaining 1% is found throughout the body in blood, muscle, and the fluid between cells. It is needed for muscle contraction, blood vessel contraction and expansion, the secretion of hormones and enzymes, and sending messages through the nervous system.

Chloride is essential in the maintenance of the body's acid-base and fluid balance. It is an essential component of the gastric (digestive) juices. It comprises approximately 0.15% of human body weight. It is primarily found in cerebrospinal fluid and gastrointestinal secretions. Chloride is present in small amounts within bone. It is the major anion in plasma and interstitial fluid, where it aids in the maintenance of osmotic pressure and electrolytic balance. It is essential for the production of hydrochloric acid, which is secreted from the parietal cells of the stomach, and vital in maintaining the proper acidic environment for pepsin. Chloride is essential, as are sulfur and phosphorus, in maintaining the acid/base balance of the body fluids. It is essential in buffering the acid/base fluctuations, which occur during carbon dioxide uptake and release in red blood cells. It is also influential in the conservation of potassium, which is inefficiently resorbed by the body.

Chromium is a mineral that is essential for impaired glucose tolerance, elevated blood cholesterol and triglyceride levels, promotion of weight loss, acne, stimulates enzymes in metabolism of energy, healthy blood circulatory system, synthesis of fatty acids, cholesterol and protein with added vanadium. It helps to prevent and lower high blood pressure. It can also deter diabetes because it works with insulin in the metabolism of blood sugar. This trace mineral helps transport protein where it is needed in body. It also helps improve glucose uptake in elderly people when loss comes as natural result of aging.

Copper is necessary in all higher plants and animals. Copper is carried mostly in the bloodstream on a plasma protein called ceruloplasmin. When copper is first absorbed in the gut it is transported to the liver bound to albumin. Copper is found in a variety of enzymes, including the copper centers of cytochrome c oxidase and the enzyme superoxide dismutase (containing copper and zinc), and is the central metal in the oxygen-carrying pigment hemocyanin. The blood of the horseshoe crab, limulus Polyphemus, uses copper rather than iron for oxygen transport.

Fluoride is the ionic form of fluorine, and is instrumental in protecting bone and tooth enamel from loss of constituent minerals. Fluoride is most concentrated within tissues such as cementum, bone, dentin, and enamel. Fluoride is proposed to enhance the precipitation of hydroxyapatite crystals in solutions of calcium and phosphate and therefore tends to prevent the demineralization of bone and teeth. It has been further proposed that fluoride becomes integrated within the hydroxyapatite crystals, creating enlarge and less soluble crystals. As these crystals are less soluble and less reactive, dissolution of the tooth structure by acidic by-products of microorganism metabolism cannot occur as readily. Bone is also less likely to demineralize due to the decreased solubility of the fluoride containing crystals.

Iodine is commonly known to have a major effect on thyroid function. It is a main component of the thyroid hormone thyroxine. However, Iodine has many other effects: from controlling the effects of oestrogen on breast tissue to protecting against the effects of radioactivity. Iodine is in the formation of the foetal nervous system. It is also an important component of healthy connective tissues.

Magnesium plays important roles in the structure and the function of the human body. It is important as a cofactor for enzymes that convert adenosine triphosphate to adenosine pyrophosphoric acid, with the subsequent release of energy. As a constituent of these enzymes, magnesium is essential to reactions involving the synthesis and metabolism of carbohydrates, lipids, proteins, and nucleic acids. Magnesium acts to relax muscles after calcium stimulates contraction. It is also necessary for the attachment of RNA to the protein-synthesizing ribosomal protein and for the synthesis, degradation, and stability of DNA. Magnesium has been termed a natural tranquilizer due to its therapeutic effect on the nervous symptoms of magnesium deficiency. These are essential for the activity of amino peptidases, which are secreted from the mucosal cells in the intestine to aid in the digestion of proteins.

Manganese is an essential trace nutrient in all forms of life. It is essential for smooth functioning of the brain and also needed in the production of certain enzymes. Manganese deficiency symptoms include pain in the joints, high blood sugar, bone/disc problems and poor memory. Good sources of manganese include tea, wheat germ, spinach, split peas, nuts, oat germ, oatmeal, pineapple, and green leafy vegetables. Manganese in excess is toxic. Exposure to manganese dusts and fumes should not exceed the ceiling value of 5 mg/m3 for even short periods because of its toxicity level.

Molybdenum is an essential trace mineral in human nutrition. It is found in several tissues of the human body and is required for the activity of some enzymes that are involved in catabolism, including the catabolism of purines and the sulfur amino acids. Molybdenum is a transition metal with atomic number 42 and an atomic weight of 95.94 Daltons. Its symbol is Mo. Compounds of molybdenum are among the scarcer constituents of the earth's crust. It prevents and treats molybdenum deficiency. It has putative anticarcinogenic activity.

Phosphorus is a key ingredient in all known forms of life. Inorganic phosphorus in the form of the phosphate plays a major part in biological molecules such as DNA and RNA where it forms part of the structural backbone of these molecules.

Potassium is a necessary mineral in daily nutrition. It assists in muscle contraction and in maintaining fluid and electrolyte balance in body cells. Potassium is also important in sending nerve impulses as well as releasing energy from protein, fat, and carbohydrates during metabolism. A shortage of potassium can cause a potentially fatal condition known as hypokalemia, frequently caused by diarrhea, increased diuresis and vomiting.

Selenium is a trace element that is essential in small amounts, but can be toxic in larger amounts. It is an important constituent of the enzyme glutathione peroxidase, which is responsible for destroying lipid-damaging peroxides. In this role, selenium complements the anti-oxidizing function of vitamin E. The enzyme glutathione peroxidase is contained within white blood cells and blood platelets, and has importance in the immune system and blood clotting mechanisms of the body. It may also be important in the regulation of serum cholesterol levels, although this effect has not been conclusively proven experimentally. It serves to prevent the incidence of mercury poisoning by affecting the body's metabolism of the potential toxin.

Sodium is an essential mineral or micronutrient, which along with potassium helps to regulate the body's fluid balance. The most common form of sodium used is table salt, which is 40 percent sodium. One teaspoon of table salt contains 2,300 milligrams of sodium.

Sulfur occurs principally in the body as a constituent of the cysteine and methionine. As a constituent of these amino acids it plays an important role in the structural conformation of almost all proteins and enzymes found in the body. It is also important in the structure of antibodies, and the sulfide group of cysteine is important in the activity of various enzymes. The disulfide linkage, which is formed between two cysteine residues, tends to bind up adjacent parallel peptide chains, thereby adding to the structural rigidity of many proteins. It is a significant constituent of thiamine (vitamin B-1) and biotin, and is found in insulin, keratin, and various glycoproteins. It is essential in the molecule chondroitin sulfate in bone and cartilage.

Zinc is a constituent of many enzymes. It is essential for the proper function of these various enzymes. It is necessary for the metabolism and structural stability of nucleic acids. The zinc content of the adult human body ranges from 1.4 to 2.5 grams, with the highest concentrations in the bone, liver, kidney, pancreas and muscle tissue. It is a constituent of the enzyme carbonic anhydrase. This enzyme is, in turn, a constituent of red blood cells and gastric juices, and plays an important role in the deposition of calcium salts in teeth and bones. It has been associated with a variety of bodily functions such as the healing of wounds, reproduction, growth, and maintenance of glucose tolerance in the body. All of these functions have been shown to be impaired upon prolonged zinc deficiency.