A unispacer is a small metallic wedge which is sometimes used in knee surgery to correct the deformity of a meniscectomy (removal of the meniscus) and improve the consequent imbalance of forces after meniscectomy.


Results of unispacer

The outcomes of the original metallic unispacer have not been good, but some researchers are working on a soft interpositional disc.


Interpositional discs

Mentioned for completeness.

I have a particular interest in the OrthoGlide implant which has just received FDA approval in the USA as an alternative to partial or total knee replacement in selected patients.

In fact I will be part of a group of physicians touring France and the UK in Spring of 2007 to present our findings.

The OrthoGlide implant is...

Interpositional knee discs are implants that are intended to improve the alignment and function of an arthritic knee without removing any existing bone - an exciting concept!

Current interpositional knee discs include the Unispacer and the OrthoGlide.


The Unispacer

The UniSpacer™ procedure is relevant to patients with


Arthritis of the knee is an increasingly common problem amongst active patients, typically from ages 35 through middle-aged and into the elderly population.

The inner/medial...



The Unispacer knee implant: early clinical results. Bailie AG, Lewis PL, Brumby SA, Roy S, Paterson RS and Campbell DG. J Bone Joint Surg Br. 2008 Apr;90(4):446-50. doi: 10.1302/0301-620X.90B4.20319.