Synovisol as an irrigant for electrosurgery of joints
1988
Summary The appropriate irrigation fluid for use during arthroscopic procedures should be selected on the basis of fluid-tissue and fluid-instrumentation compatibility. This study describes a new irrigation fluid, Synovisol, that is isomolar, nonhemolytic, nonantigenic, has a low viscosity, and is nonconductive. The rabbit knee was used as a model to demonstrate the immediate and long-term (3 weeks) effects of irrigation with Synovisol compared with water, normal saline, mannitol, sorbitol, glycine, and with nonirrigated controls. Results were assessed by light- and electron-microscopic evaluation of synovium and cartilage dissected from rabbit knees. While the greatest amount of damage was seen in water-treated samples, significant effects were noted with other irrigants compared with Synovisol and controls. Long-term animals showed recovery of tissues in all cases. Systemic effects evaluated by measuring plasma glycerol levels showed a transient increase that peaked at 20 min. No hemolysis was detected and kidney morphology was normal. The physiological, electrocompatible, simplicity of formula, low cost, and long-shelf-life properties of this solution makes it a fluid uniquely suited to arthroscopy.
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