Trigger finger is caused by inflammation of the synovium, enlargement of the tendon, and thickening or narrowing of the sheath itself, usually in the area of the palm closest to the fingers. The name of the tendon sheath in this area is the âA1 pulleyâ.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  isotonic(Adjective) having the same osmotic pressure. 2  isotonic(Adjective) Having the same concentration of solutes as human blood. Use an isotonic saline solution in your neti pot to prevent irritation of your nasal passages. 3  isotonic(Adjective) having equal tension.
See hyperosmotic agent; osmotic pressure; physiological saline. hypotonic s. A solution with an osmotic pressure lower than that of an isotonic solution. Hypotonic ophthalmic solutions generally cause less irritation than hypertonic ones.See osmotic pressure. isotonic s. A solution with an osmotic pressure equal to that on the other side of a semipermeable membrane.Example: sodium chloride 0.9% is considered to be approximately isotonic with the tears. See osmotic pressure; physio-logical saline.ee hyperosmotic agent; osmotic pressure; physiological saline. hypotonic s. A solution with an osmotic pressure lower than that of an isotonic solution. Hypotonic ophthalmic solutions generally cause less irritation than hypertonic ones.