Fixed- versus mobile-bearing unicondylar knee arthroplasty: are failure modes different?

Cheng, Tao; Chen, Daoyun; Zhu, Cairong; Pan, Xiaoyun; Mao, Xin; Guo, Yongyuan; Zhang, Xianlong

doi:10.1007/s00167-012-2208-y

Cited by 35 publications

(30 citation statements)

References 71 publications

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“…This design should reduce the contact stress at the articulating interface and result in a low bearing wear rate (0.01-0.04 mm/y) 8,45 than FB UKA (0.15 mm/y). 37,44 Compared with previous meta-analyses, 40,41 we included more updated and new clinical research studies (published up to 2017) and a larger sample size ($50% more patients were included), allowing a more precise comparison of MB UKA and FB UKA. The most significant result of our review was that the FB UKA group showed higher knee scores and superior ROM than the MB UKA group.…”

Section: Discussionmentioning

confidence: 99%

A Comparison of Mobile- and Fixed-Bearing Unicompartmental Knee Arthroplasties in the Treatment of Medial Knee Osteoarthritis: A Systematic Review and Meta-analysis of 1,861 Patients

Huang

Chang

et al. 2019

J Knee Surg

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Many studies have compared mobile-bearing (MB) and fixed-bearing (FB) unicompartmental knee arthroplasties (UKAs) in patients with unicompartmental knee osteoarthritis (OA). The present systematic review and meta-analysis examined the differences in the clinical and radiological outcomes of MB UKA and FB UKA. PubMed, EMBASE, and Cochrane databases, as well as Google Scholar were searched for relevant studies. Randomized controlled trials (RCTs) and cohort studies that compared MB UKA and FB UKA were included. The weighted mean difference in the knee scores and range of motion (ROM) as well as the summary odds ratio of postoperative mechanical axis alignment, radiolucency, revision rate, and complications were calculated in the MB UKA and FB UKA groups. Finally, 2 RCTs and 11 cohort studies that involved 1,861 patients (1,996 knees) were included. The FB UKA group showed better postoperative Knee Society score (KSS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and ROM than the MB UKA group. However, the MB UKA group had more knees with a neutral limb alignment and a lower incidence of polyethylene wear than the FB UKA group. No significant differences were observed between the groups with respect to radiolucency, revision rate, and complications, such as arthritis progression, aseptic loosening, and postoperative pain. This meta-analysis has demonstrated that both prostheses provided excellent clinical outcomes and survivorship in patients with unicompartmental knee OA. The MB UKA group achieved the expected postoperative neutral limb alignment as compared with the FB UKA group, while the FB UKA group showed higher knee scores and superior ROM than the MB UKA group. Limited evidence is currently available; therefore, the results of our meta-analysis should be interpreted with caution.

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Section: Discussionmentioning

confidence: 99%

A Comparison of Mobile- and Fixed-Bearing Unicompartmental Knee Arthroplasties in the Treatment of Medial Knee Osteoarthritis: A Systematic Review and Meta-analysis of 1,861 Patients

Huang

Chang

et al. 2019

J Knee Surg

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“…A large number of studies report wearing at late period for UKA with fixed-bearing insert and insert luxation at early period for UKA with mobile-bearing insert (17)(18)(19). Patellofemoral joint is not mentioned sufficiently despite a change in indications.…”

Section: Discussionmentioning

confidence: 99%

Impact of Fixed-Bearing and Mobile-Bearing Tibial Insert in Unicondylar Knee Arthroplasty

Çatma¹,

Aksekili²,

Kılınçarslan³

et al. 2016

Acta Med Anatol

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“…Several systematic reviews on this topic have been published recently. Cheng et al 10 found equivalent range of motion, limb alignment, patient-reported outcomes, incidence of aseptic loosening, and reoperation rates between the two bearing designs. However, the time to reoperation and failure mode were different.…”

Section: Fixed Vs Mobile Bearing Designmentioning

confidence: 97%

Unicondylar knee arthroplasty: Key concepts

Halawi

Barsoum

2017

Journal of Clinical Orthopaedics and Trauma

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Fixed- versus mobile-bearing unicondylar knee arthroplasty: are failure modes different?

Abstract: The available evidence has not confirmed the advantage of mobile-bearing UKAs over fixed-bearing UKAs but pointed out specific modes of failure.

Cited by 35 publications

References 71 publications

A Comparison of Mobile- and Fixed-Bearing Unicompartmental Knee Arthroplasties in the Treatment of Medial Knee Osteoarthritis: A Systematic Review and Meta-analysis of 1,861 Patients

A Comparison of Mobile- and Fixed-Bearing Unicompartmental Knee Arthroplasties in the Treatment of Medial Knee Osteoarthritis: A Systematic Review and Meta-analysis of 1,861 Patients

Impact of Fixed-Bearing and Mobile-Bearing Tibial Insert in Unicondylar Knee Arthroplasty

Unicondylar knee arthroplasty: Key concepts

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