Tibial hemiarthroplasty using the UniSpacer Knee System is a viable treatment alternative for knee osteoarthritis of the medial compartment. Improvements in patient selection, surgical technique, and rehabilitation continue to improve results. In contrast to alternative procedures, implantation of the UniSpacer Knee System preserves the natural knee anatomy therefore future knee procedures are not compromised. The early results suggest that the UniSpacer Knee System is a complementary alternative to other treatment options.
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The unicompartmental knee implant UniSpacer™: Ten-year outcomes after treatment for medial tibio-femoral osteoarthritis.
Orthop Traumatol Surg Res
May 2021
Service de chirurgie orthopédique et traumatologique, CHU de Dijon Bourgogne, 21000 Dijon, France; Inserm UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences de Santé, 21000 Dijon, France.
Background: UniSpacer™ type implants were part of the therapeutic armamentarium for medial tibio-femoral osteoarthritis before they were taken off the market in 2011. UniSpacer™ is a mobile interpositional self-centring implant that replicates the shape of the meniscus. It requires no bone cuts or component fixation.
View Article and Find Full Text PDF[The UniSpacer™: correcting varus malalignment in medial gonarthrosis. Preliminary results].
Rev Esp Cir Ortop Traumatol
April 2014
Departamento de Cirugía Ortopédica y Traumatología, University Hospital Giessen and Marburg, Giessen, Alemania.
While options for operative treatment of leg axis varus malalignment in patients with medial gonarthrosis include several established procedures, such as unicompartmental knee arthroplasty (UKA), total knee arthroplasty (TKA), or high tibial osteotomy (HTO), so far there has been little focus on a less invasive option introduced more recently: the UniSpacer™ implant, a modern, self-centering, metallic interpositional device for the knee. This study evaluates whether alignment correction can be achieved by UniSpacer™ arthroplasty as well as alignment change in the first 5 postoperative years is evaluated. Antero-posterior long leg stance radiographs of 15 legs were digitally analyzed to assess alignment change: two relevant angles and the deviation of the mechanical axis of the leg were analyzed before and after surgery.
View Article and Find Full Text PDF[The 2-year follow-up results of a patient-specific interpositional knee implant].
Orthopade
December 2011
Asklepios Klinikum Bad Abbach, Klinik und Poliklinik für Orthopädie, Universität Regensburg, Kaiser-Karl-V.-Allee 3, 93077, Bad Abbach, Deutschland.
Background: Besides the primary goal of functional improvement and pain reduction, the operative treatment of unicompartmental arthritis in younger patients is focused on preservation of intact bone and joint structures. The question arises whether an interpositional knee implant based on magnetic resonance imaging (MRI) data can be an alternative treatment option to the established procedures of high tibial osteotomy and unicompartmental knee arthroplasty.
Methods: From June 2004 to May 2008 a total of 33 patients suffering from unicompartmental knee arthritis received a patient-specific interpositional implant (31 medial and 2 lateral) within a single arm trial.
The Unispacer™ unicompartmental knee implant: its outcomes in medial compartment knee osteoarthritis.
Orthop Traumatol Surg Res
June 2011
Department of Orthopaedic and Trauma Surgery, Dijon Teaching Hospital Center, 10, boulevard Maréchal-de-Lattre-de-Tassigny, BP 77908, 21079 Dijon cedex, France.
Introduction: A new concept has been recently developed for use in the treatment of isolated medial tibiofemoral osteoarthritis: the Unispacer™ implant. This mobile interpositional, self-centering implant replicates the meniscal shape. This mini-invasive device does not require bone cuts or component fixation.
View Article and Find Full Text PDFThe UniSpacer™: correcting varus malalignment in medial gonarthrosis.
Int Orthop
December 2010
Hospital for Orthopaedic Surgery, Vulpius Klinik GmbH, Bad Rappenau, Germany.
While options for operative treatment of leg axis varus malalignment in patients with medial gonarthrosis include several established procedures, such as unicompartmental knee arthroplasty (UKA), total knee arthroplasty (TKA) or high tibial osteotomy (HTO), there has been little focus on a less invasive option introduced more recently: the UniSpacer™ implant, a self-centering, metallic interpositional device for the knee. This study evaluates clinical and radiological results of the UniSpacer™, whether alignment correction can be achieved by UniSpacer™ arthroplasty and alignment change in the first five postoperative years. Anteroposterior long leg stance radiographs of 20 legs were digitally analysed to assess alignment change: two relevant angles and the deviation of the mechanical axis of the leg were analysed before and after surgery.
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