This system restores the unique articular surface geometry of the compartment by using an intraoperative 3dimensional mapping system and contoured articular resurfacing implants. Oxford unicompartmental knee manual of the surgical. The established advanced surface technology creates one of the hardest surfaces and enables allergy prevention. The hypothesis was that this procedure would lead to a high success rate in patients affected by isolated medial unicompartmental osteoarthritis and. Occasionally mri studies of the knee and even diagnostic arthroscopy to directly visualize the interior of the knee may be necessary to determine if a patient is a candidate for unicompartmental replacement. Center and surgeon volume influence the revision rate following unicondylar knee replacement. Pdf unicompartmental knee replacement current perspectives. Optetrak unicondylar system total knee arthroplasty. Unicompartmental knee replacement page 7 subacromial decompression oxford unicompartmental knee replacement depending on how much of your knee is affected by arthritis, surgeons can sometimes perform a partial knee replacement also known as a unicompartmental knee replacement, ukr as opposed to a total knee replacement tkr. By having a partial knee replacement before osteoarthritis progresses, you may be able to prevent the disease from spreading 2, and avoid having to undergo a total knee replacement. The zimmer biomet oxford partial knee is a medial partial knee replacement system consisting of a femoral component, a tibial component, and a freely mobile meniscal bearing, featuring.
Unicondylar tibiofemoral replacements should be seen as real resurfacings of the knee joint. Pdf unicondylar knee arthroplasty with repicci model. The patient reported to be pain free with an excellent recovery of the knee. This is in part, because the cruciate ligaments and half of the knee joint are not touched in the surgery. Unicondylar partial knee replacement comparable to total knee replacement. Because total knee replacement can be expected to last only 10 to 15 years, many orthopedic surgeons have been reluctant to offer it to younger patients. Unicondylar knee arthroplasty uka has evolved substantially since its conceptual introduction by mckeever and macintosh in the late 1950s. Since only one compartment is diseased, the overall geometry of the knee is better preserved. In conclusion, this study shows that open wedge high tibial osteotomy and unicondylar knee replacements have no significant. Analysis of revision procedures for failed unicondylar. Any excess cement was removed around the implant and the cement was allowed to cure. Arthritic disease in people younger than age 55 years is increasingly common. The oxford partial knee comes with the only lifetime knee implant replacement warranty in the us. Comparison of open wedge high tibial osteotomy versus.
Unicondylar knee arthroplasty after knee replacement. Pdf the popularity of unicompartmental knee arthroplasty uka for the treatment of isolated compartment. Femoral component sizing in oxford unicompartmental knee. The physical examination of the knee must confirm the location of the tenderness along the medial joint line. Outcomes of a fixedbearing, medial, cemented unicondylar knee.
Revision rates following unicondylar knee replacement vary among reporting institutions. Revision of unicondylar to total knee arthroplasty. Unicondylar knee replacement bangalore partial knee. In unicompartmental knee replacement also called partial knee replacement only a portion of the knee is resurfaced with metal and plastic components. Oxford mobilebearing uka, revealing a survivorship. Theoretically, unicondylar knee replacement offers great potential in restoring knee kinematics. The theory of unicompartmental replacement of only one side of one compartment of the knee joint came from duncan c. Unicondylar knee replacement, rhode island, orthopedics. The joint surface is covered by a smooth articular surface that allows pain free movement in the joint.
Unicondylar knee replacement sherman oaks knee arthitis. Unicompartmental knee replacement ukr is an effective treatment for endstage, symptomatic unicompartmental osteoarthritis of the knee. Nevertheless, patients who require knee replacement and who do not ful. This procedure is an alternative to total knee replacement for patients whose disease is limited to just one area of the knee. Unicompartmental knee replacement is a minimally invasive surgery in which only the damaged compartment of the knee is replaced with an implant. Chapter 2 classical patient selection for unicondylar knee arthroplasty alfred j. Outcome of unicondylar knee arthroplasty vs total knee arthroplasty for early medial compartment arthritis. Pseudomeniscal synovial impingement after unicondylar knee.
The purpose of this study was to compare the functional results, knee scores, activity levels, and complications between the two procedures. The unicondylar knee replacement uka centre had 22 patients over june 2012 to august 20 and used the oxford partial knee system in these operations. A relatively young person with knee arthritis, which is almost exclusively on one side of the knee, with severe pain and limited ambulatory tolerance, is a candidate for unicondylar knee replacement. Partial knee system oxford partial knee zimmer biomet. Unicondylar knee replacements have been performed since the early 1970. Page 8 unicompartmental knee replacement how successful is ukr surgery. The aims of the study were to assess the modes of early failure of uka and see whether the conversion to tka improved the functional scores, range of motion, pain and patient satisfaction. Unicompartmental knee arthroplasty uka is a surgical procedure used to relieve arthritis in one of the knee compartments in which the damaged parts of the knee are replaced. The purposes of this study were to perform a survival analysis of unicondylar osteoarticular allografts of the knee and to evaluate the complications. One of the key factors for a successful outcome after ukr surgery is the number of ukr cases carried out by the hospital. Contemporary indications, surgical technique, and results. Unicondylar knee arthroplasty uka is a wellestablished treatment option for unicompartmental knee arthrosis. Anatomical shape of tibial component for optimal bone coverage.
The oxford unicompartmental knee arthroplasty uka biomet, warsaw, indiana is a wellestablished implant and reports from the designer. This procedure is designed to replace only the portions of the knee most damaged by arthritis, leaving the healthier portions intact and letting patients benefit from less. Revision rates following unicondylar knee replacement vary. Indications, outcomes, and complications of unicompartmental knee. Unicompartmental knee arthroplasty uka is an alternative to total knee. Unicondylar knee replacement simply means that only a part of the knee joint is replaced through a smaller incision than would normally be used for a total knee replacement. Oxford unicompartmental knee replacement oukr has shown excellent longterm. Medial unicondylar knee arthroplasty combined to anterior. Unicondylar partial knee replacement for the treatment. Key points the patient must be able to indicate the location of the knee pain along the medial joint line in the varus knee. An unicondylar replacement cannot change the original natural alignment or ligament balance of the knee. A resurgence in the unicompartmental knee arthroplasty uka since.
The ceramic surface reduces polyethylene wear and increases scratch resistance. Unicompartmental knee arthroplasty, is it superior to high. Unicondylar knee replacement surgery dubai abu dhabi. Unlike total knee replacement that removes all the knee joint surfaces, a unicondylar or partial knee replacement replaces only one part of the knee joint.
Oxford unicompartmental knee replacement the oxford partial knee replacement. Unicondylar knee replacement orthopaedic associates of. Unicondylar knee replacement can be successfully performed using the oxford partial knee implant, the only fully mobile bearing partial knee system currently available. Unicompartmental knee arthroplasty, bearing design, fixation technique.
New book unicompartmental arthroplasty with the oxford knee. Author links open overlay panel vikas kulshrestha ms orth a barun datta ms. This is a less invasive procedure that allows for a more natural feel after surgery. Unicondylar knee arthroplasty orthopaedic foundation. The purpose of the present study was to retrospectively evaluate the outcomes of patients who underwent combined medial unicompartmental knee arthroplasty uka and anterior cruciate ligament acl reconstruction. Lets compare makoplasty robotic knee surgery with oxford partial knee. Unicondylar knee arthroplasty uka is argued to be a conservative procedure which permits a later total knee arthroplasty tka should it be required. Uka surgery may reduce postoperative pain and have a shorter recovery period than a total knee replacement procedure, particularly in people over 75 years of age. Hip and knee replacements and procedures pat brooks a partial hip replacementpages 1214 karl koenig, md, ms b hip resurfacing procedurespages 1516 total joint arthroplasty division leader c unicondylar knee replacementpages 1718 department of orthopaedic surgery d patellofemoral joint procedurespages 1920. In total knee replacement, recovery is usually three to six months compared to four to six weeks for unicondylar replacement. Debate remains whether high tibial osteotomy hto or unicompartmental knee arthroplasty uka is more beneficial for the treatment of unicompartmental knee osteoarthritis. Outcome of unicondylar knee arthroplasty vs total knee.
This treatment is suitable for people who experience arthritis only in one compartment section of the knee joint, rather than throughout the joint. Medial unicondylar knee replacement orthopaedicsone. Unicondylar partial knee replacement comparable to total. Oxford unicondylar knee replacement princeton new jersey. In knees that are otherwise healthy, a partial knee replacement can preserve the healthy bone, cartilage, and ligaments. During a unicondylar knee replacement, your doctor will make a small incision in the front of the knee or wherever the damaged area is. Unicondylar knee replacements have been performed since the early 1970s with mixed success. Pdf improved prosthetic design and application of strict criteria in selection of patients have resulted in wide use of unicompartmental knee. Partial knee replacements for arthritis are safer than. Also known as a partial knee replacement, a unicondylar knee replacement is an alternative to total knee replacement for patients suffering from osteoarthritis with damage confined to only one compartment of the knee joint. Partial knee replacements for arthritis are safer than total replacement health research partial knee replacement surgery for severe osteoarthritis is safer than total knee replacement, according to an oxford university study published in the medical journal the lancet. Conforming, spherical design minimizes contact stress throughout entire range of motion 4. Its also a good alternative for the younger patient. The unlistedprocedure code 29999 is not appropriate for this particular total knee replacement because 27446 arthroplasty, knee, condyle and plateau.
Its biomedicallyinspired articular geometry and proprietary net compression molded polyethylene facilitate restoration for preprimary total knee replacement. Its your assurance that zimmer biomet not only makes a proven partial knee, but we stand behind it 100%. Also known as unicompartmental knee replacement, unicondylar knee replacement is a less invasive alternative to a total knee replacement. Download unicompartmental arthroplasty with the oxford knee oxford medical publications pdf free. Knee solutions unicompartmental knee arthroplasty system. When knee pain from osteoarthritis, interferes with daily activity, walking tolerance, and independence, it is time to. Unicondylar knee replacement ukr or partial knee arthroplasty tka, is a type of knee replacement involving only the diseased half of the joint. In these patients one can generally perform minimally invasive knee replacements of just the diseased inner portion of the knee. In addition, current indicat ions for a unicondylar replacement necessitate the presence of an intact anterior cruciate ligament. Unicondylar knee arthroplasty rodriguez hip and knee. Pdf oxford medial unicompartmental knee arthroplasty. In our experience results of the oxford unicompartmental knee replacement have not been as good as had been expected.
Unicompartmental knee arthroplasty austin publishing group. Although uka achieves high success rates, surgeons should be aware of many. Midterm results of oxford phase 3 unicompartmental knee. Partial knee replaces only the area of the knee that is worn out, sparing patients the more medically complicated and involved total knee replacement surgery. Primary end points of this study were implant survival and functional outcomes assessed by the oxford knee score. Partial knee replacement also known as unicompartmental knee arthroplasty is a surgical treatment for knee arthritis.
The clinical outcome of revision knee replacement after unicompartmental knee arthroplasty versus primary total knee arthroplasty. Recent research has found that approximately 50% of knee replacement patients are candidates for partial knee replacement 1. With a partial knee replacement, there is a dramatically shorter recovery time due to less surgical trauma, less scarring and fuller range. While the initial results of unicondylar knee replacement published in the 1970s and 1980s were frustrating, these studies focused on early designs for fixed bearing unicondylar knee devices with. Unicondylar knee replacement provides a superior functional outcome to total knee arthroplasty in the young and active adult in opposition. Outcomes and early revision rate after medial unicompartmental.
Oxford unicompartmental knee manual of the surgical technique. Unicompartmental knee arthroplasty is considered as an alternative to total knee arthroplasty for patients who have. The operation is performed through a 5 10 cm incision over the inner aspect of the knee. Oxford partial knee replacement surgery at gokhale hospital pune, by dr.