Anterior odontoid screw fixation is a safe and efficacious treatment for odontoid fractures, especially type II odontoid fractures. It offers stable fixation without loss of atiantoaxial motion.

Anterior old plating systems are designed to provide flexibility and simplicity for the spinal surgeon, allowing replication of normal anatomical function and safe fixation of the plate. These systems include numerous features that meet the needs of the spinal surgeon in providing safe, effective anterior cervical spine fixation.

Anterior thoracolumbar plating system is intended for the treatment of trauma/tumor and instability in the lumbar and thoracic regions.

Anthropometric tape is a steel flexible tape with a filed notch and patch zero indicator to provide a better reading interface than a single zero line since the interface has no area. The notch helps orient the tape and align on the interface.

Anti diuretics is a drug that limits the formation of urine. It reduces output of urine by increasing reabsorption of water by kidney.

Anti-Endomysial Antibody test is used both to diagnose patients with coeliac disease and also help to interpret a positive antigliadin test. The anti-endomysial antibody is a good marker for celiac disease.