Survivorship of cemented knee replacements

Scuderi, G R; Insall, J N; Windsor, Russell E.; Moran, Michael C.

doi:10.1302/0301-620x.71b5.2584250

Cited by 324 publications

(116 citation statements)

References 7 publications

Supporting

Mentioning

104

Contrasting

Unclassified

Order By: Relevance

“…Both posterior-cruciate-preserving and posterior-cruciatesubstituting designs utilizing polymethylmethacrylate bone cement for fixation showed greater than 90% survivorship at followup of 10 or more years [11,31,32,36,37]. APT utilization decreased markedly in the late 1980s and 1990s due to several concerning reports about APT components [6,7,9,10,12].…”

Section: Introductionmentioning

confidence: 99%

“…APT utilization decreased markedly in the late 1980s and 1990s due to several concerning reports about APT components [6,7,9,10,12]. Metal-backed tibial (MBT) components with modularity were introduced to improve intraoperative flexibility [11,21,36], provide options for revision surgery, and improve the survivorship of the tibial implant [2,37,38] by improving load transfer to the tibial plateau and improving fixation [33,38,39].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

All-polyethylene and Metal-backed Tibial Components Are Equivalent With BMI of Less Than 37.5

Toman¹,

Iorio²,

Healy³

2012

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

Background Modular, metal-backed tibial (MBT) components are associated with locking mechanism dysfunction, breakage, backside wear, and osteolysis, which compromise survivorship. All-polyethylene tibial (APT) components eliminate problems associated with MBTs, but, historically, APT utilization has generally been limited to older, less active patients. However, it is unclear whether APT utilization can be expanded to a nonselected patient population. Questions/purposes We therefore determined the survivorship of APT components compared with MBT components in a non-age-or activity-selected population who underwent TKA. Methods Using a longitudinal database, we identified 775 patients with primary TKAs utilizing a single implant design between 1999 and 2007. Of these, 558 (72%) patients had APT components (APT2), while 217 (28%) patients with tibial bone loss or defects, contralateral MBT components, or a BMI of greater than 37.5 received MBT components. We determined the survivorship in the two groups. The minimum followup was 2 years for both groups (mean ± SD: MBT, 80 ± 29 months; APT, 63 ± 27 months). The APT group was older (average age: APT2, 70 years; MBT, 64.7 years) and had a lower BMI than the MBT group (APT2, 30.8; MBT, 33.8).Results Survivorship, as defined by revision for any reason, was 99% for the APT group and 97% for the MBT group. There were four (2%) tibial failures in the MBT group in patients with a BMI of greater than 40. There were no revisions for loosening or osteolysis in the APT group. Conclusion APT implants perform as well as MBT implants in a non-age-or activity-selected TKA population with a BMI of less than 37.5. Level of Evidence Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

All-polyethylene and Metal-backed Tibial Components Are Equivalent With BMI of Less Than 37.5

Toman¹,

Iorio²,

Healy³

2012

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

show abstract

“…Currently we find various survival outcomes for total knee replacements (Knutson et al 1986, Ritter et al 1989, Scuderi et al, 1989, Laskin 1990, Bergman and Rand 1991, Rand and Ilstrup 1991, Nelissen et al 1992, L'Insalata et aI. 1992, Nafei et al 1993, Ranawat et al 1993, Malkani et al 1995, Ritter et al 1995, but few such studies are available for medial UKA.…”

mentioning

confidence: 99%

St. Georg sledge for medial compartment knee replacement: 461 arthroplasties followed for 4 (1-17) years

Ansari¹,

Newman²,

Ackroyd³

1997

Acta Orthopaedica Scandinavica

View full text Add to dashboard Cite

“…Numerous studies reported good long-term results, including two metal-backed posterior-stabilized designs with greater than 98.8% survival at 7 years [30] and 15 years [29] and the fixed-bearing TKA design used in this study with 97% at 10 years [13], and finally, an early design with 98% at 20 years [5,15,26]. Because of the success of both mobile-and fixed-bearing designs, some authors have questioned whether those design differences affect polyethylene wear in any way [18,28].…”

Section: Introductionmentioning

confidence: 99%

Rotating Platform versus Fixed-bearing Total Knees: An In Vitro Study of Wear

Haider

Garvin

2008

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

One of the assumed benefits of mobile bearings is the reduction of UHMWPE wear. However, to date, such benefit has not been categorically proven. To test the hypothesis that rotating platform total knee arthroplasty would have less wear than a fixed-bearing of the same design, this in vitro study compared the wear and kinematics (which influence wear) of one type of mobile with fixed-bearing tibial components of otherwise identical design. We tested four fixed bearing (FB) and four rotating platforms (RP) on force control knee simulators using identical ISO standard force inputs and simulated soft tissue restraint for 6 million walking cycles. The internal/external rotations peaked just before toe off, reaching an average maximum of 7°internal (tibial rotation) in the RP, 1.5 times that of the FB, which peaked at approximately 4.5°inter-nally. Two of the RP specimens showed infrequent and mostly temporary dislocations of the UHMWPE insert. The wear rate for the FB averaged 8.14 ± 2.63 mg/million cycles and the RP averaged 6.78 ± 1.74 mg/million cycles. Both were very low wear rates compared with most other implants tested similarly in the same laboratory. We concluded polyethylene wear was similar for both designs.

show abstract

Survivorship of cemented knee replacements

Cited by 324 publications

References 7 publications

All-polyethylene and Metal-backed Tibial Components Are Equivalent With BMI of Less Than 37.5

All-polyethylene and Metal-backed Tibial Components Are Equivalent With BMI of Less Than 37.5

St. Georg sledge for medial compartment knee replacement: 461 arthroplasties followed for 4 (1-17) years

Rotating Platform versus Fixed-bearing Total Knees: An In Vitro Study of Wear

Contact Info

Product

Resources

About