Do phospholipids affect the friction of articular cartilage on silicone rubber? (experimental study)

Abstract

The results of model experiments showed that when surfaces of native articular cartilages interacted friction coefficient was within 0.02-0.07 (depending on the load quantity). When cartilagenous surfaces interacted with silicone rubber that index was 3 to 6 times higher. Putting of 3-6 mg/cm2 of egg or synthetic polymerized phosphatidylcholone on the surface of silicone rubber considerably decreased the friction coefficient at interaction of rubber with the cartilagenous surface while the administration of the same quantity of egg phosphatidylcholine in the form of 10% aqueous suspension into the friction zone gave no effect. The data obtained indicate that the of phospholipids for the improvement of tribological characteristics of joint implants is a prospective one.