Total disability in the legal sense does not require that the insured be incapable of all work activity, only that the medical condition is such that ordinary and reasonable prudence would dictate that that person is not fit enough to carry out the main duties of a job of occupation.
Explanation:Sinus tract, an abnormal channel leading from within bones or other structures to the skin surface; sometimes this type of passageway is termed a fistula. Sinus tracts may form after an infection or as a means of decompression of a synovial joint in rheumatoid arthritis or classic fistulous rheumatism.
In anatomy, a sinus is a cavity within a bone or other tissue. Most are commonly found in the bones of the face and connecting with the nasal cavities: 1  Sinus (anatomy) , description of the general term. 2  Paranasal sinuses, air cavities in the cranial bones, especially those near the nose, including: Sinus (anatomy) , description of the general term. 2  Paranasal sinuses, air cavities in the cranial bones, especially those near the nose, including: 3  the maxillary sinuses, also called the maxillary antra and the largest of the paranasal sinuses, are under the eyes, in the maxillary bones.