Mid-term results of lateral unicondylar mobile bearing knee arthroplasty

Walker, Tilman; Zahn, N.; Brückner, Thomas; Streit, Marcus R.; Mohr, G.; Aldinger, Peter R.; Clarius, Michael; Gotterbarm, Tobias

doi:10.1302/0301-620x.100b1.bjj-2017-0600.r1

Cited by 59 publications

(50 citation statements)

References 29 publications

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“…Several parameters have been identified as responsible for maintaining normal knee kinematics and thus avoiding common complications such as knee pain, polyethylene wear, and lateral compartment accelerated osteoarthritis in UKA. Limb alignment, component position and sizing, ligamentous and soft-tissue balancing, interprosthetic divergence, and maintenance of the inherent joint line are some of the surgical variables which have been shown to influence the clinical outcomes of UKA as well as its longevity [136] (Figs. 3, 4).…”

Section: Should We Use Cementless Implants Instead Of Cemented Ones?mentioning

confidence: 99%

Unicompartmental knee arthroplasty, an enigma, and the ten enigmas of medial UKA

Mittal¹,

Meshram²,

Kim³

et al. 2020

J Orthop Traumatol

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Unicompartmental knee arthroplasty (UKA) is a bone-and ligament-sparing alternative to total knee arthroplasty in the patients with end-stage single-compartment degeneration of the knee. Despite being a successful procedure, the multiple advantages of UKA do not correlate with its usage, most likely due to the concerns regarding prosthesis survivability, patient selection, ideal bearing design, and judicious use of advanced technology among many others. Therefore, the purpose of this study is to review and summarize the debated literature and discuss the controversies as "Ten Enigmas of UKA. "

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Section: Should We Use Cementless Implants Instead Of Cemented Ones?mentioning

confidence: 99%

Unicompartmental knee arthroplasty, an enigma, and the ten enigmas of medial UKA

Mittal¹,

Meshram²,

Kim³

et al. 2020

J Orthop Traumatol

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“…Accuracy of component positioning and limb alignment are important prognostic variables that affect implant survival and time to revision surgery following UKA [ 5 , 9 , 38 ]. CO UKA is performed using manually positioned alignment guides, limited intraoperative data on knee kinematics, and handheld milling devices or sawblades for bone resection.…”

Section: Discussionmentioning

confidence: 99%

“…However, UKA is associated with decreased implant survivorship and increased revision rates compared with TKA [ 9 , 28 ]. Accuracy of component positioning and limb alignment are important prognostic variables that affect implant survival and time to revision surgery following UKA [ 5 , 9 , 38 ]. Consequently, techniques that improve the accuracy of implant positioning and limb alignment in UKA may help to improve long-term survivorship and reduce the burden of revision disease.…”

Section: Introductionmentioning

confidence: 99%

Robotic-arm assisted medial unicondylar knee arthroplasty versus jig-based unicompartmental knee arthroplasty with navigation control: study protocol for a prospective randomised controlled trial

Kayani

Konan

Tahmassebi

et al. 2020

Trials

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Background There remains a paucity of clinical studies assessing how any differences in accuracy of implant positioning between robotic-arm assisted unicompartmental knee arthroplasty (RO UKA) and conventional jig-based unicompartmental knee arthroplasty (CO UKA) translate to patient satisfaction, functional outcomes, and implant survivorship. The objectives of this study are to compare accuracy of implant positioning, limb alignment, patient satisfaction, functional outcomes, implant survivorship, cost-effectiveness, and complications in CO UKA versus RO UKA. Computer navigation will be used to assess intraoperative knee kinematics in all patients undergoing CO UKA. Methods and analysis This prospective randomised controlled trial will include 140 patients with symptomatic medial compartment knee arthritis undergoing primary UKA. Following informed consent, patients will be randomised to CO UKA (control group) or RO UKA (investigation group) at a ratio of 1:1 using an online random number generator. The primary objective of this study is to compare accuracy of implant positioning in CO UKA versus RO UKA. The secondary objectives are to compare the following outcomes between the two treatment groups: limb alignment, surgical efficiency, postoperative functional rehabilitation, functional outcomes, quality of life, range of motion, resource use, cost effectivness, and complications. Observers will review patients at regular intervals for 2 years after surgery to record predefined study outcomes pertaining to these objectives. Ethical approval was obtained from the London-Bloomsbury Research Ethics Committee, UK. The study is sponsored by University College London, UK. Discussion This study compares a comprehensive and robust range of clinical, functional, and radiological outcomes in CO UKA versus RO UKA. The findings of this study will provide an improved understanding of the differences in CO UKA versus RO UKA with respect to accuracy of implant positioning, patient satisfaction, functional outcomes, implant survivorship, cost-effectiveness, and complications. Trial registration ClinicalTrials.gov NCT04095637 . Registered on 19 September 2019.

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“…A multicentre study of 363 consecutive patients who underwent lateral UKA showed a high revision rate of 15% at 5 years with dislocation of the bearing (8.5% after 5 years) as a main reason for implant failure with the domed design. The authors concluded that despite the observed good functional and clinical results and the high patient satisfaction rate in this series, they decided to discontinue to use the domed mobile-bearing UKA instead of a fixed bearing component [41].…”

Section: Dislocation As a Mode Of Failure In Mobile-bearing Unismentioning

confidence: 92%

Mobile-Bearing Unis

Clarius¹,

Clarius²

2020

ESSKA Instructional Course Lecture Book

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Unicompartmental knee arthroplasty (UKA) has many advantages over total knee arthroplasty (TKA) [1-3] including better function, a better feel, better range of motion, higher patient satisfaction, less blood loss, lower infection rate, lower morbidity and even lower mortality [4-6]. Therefore, for many surgeons, UKA is option number one in the treatment of unicompartmental medial or lateral knee arthritis [7].

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Mid-term results of lateral unicondylar mobile bearing knee arthroplasty

Cited by 59 publications

References 29 publications

Unicompartmental knee arthroplasty, an enigma, and the ten enigmas of medial UKA

Unicompartmental knee arthroplasty, an enigma, and the ten enigmas of medial UKA

Robotic-arm assisted medial unicondylar knee arthroplasty versus jig-based unicompartmental knee arthroplasty with navigation control: study protocol for a prospective randomised controlled trial

Mobile-Bearing Unis

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