Comparison of the Insall-Burstein II and NexGen Legacy Total Knee Arthroplasty Systems with Respect to Patella Complications

Kavolus, Christopher H.; Hummel, Matthew T.; Barnett, Kathryn P.; Jennings, James E.

doi:10.1016/j.arth.2007.07.016

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…This system also is unique in that the tibial component uses four short pegs for fixation (as opposed to a keel or stem) and the cemented tibial and femoral components are precoated with polymethylmethacrylate (as were the cemented versions of the MGI and MGII) in an attempt to enhance component fixation. Some midterm reports suggest improved survival of this device relative to earlier implant designs [9,22,25,28,30]. The study by Bozic et al also confirmed high survivorship of this design at a mean 5.8 years postoperatively [8].…”

Section: Introductionmentioning

confidence: 57%

Cruciate-retaining TKA Using a Third-generation System with a Four-pegged Tibial Component: A Minimum 10-year Followup Note

Schwartz

Valle

Rosenberg

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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Section: Introductionmentioning

confidence: 57%

Cruciate-retaining TKA Using a Third-generation System with a Four-pegged Tibial Component: A Minimum 10-year Followup Note

Schwartz

Valle

Rosenberg

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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“…An important role in patellar tracking is played by the prosthetic design; in the present study, the femoral component presents a trochlear groove designed to sweep back posteriorly for better patellar performance. The trochlear floor has been widened to reduce the constraining forces in extension [10, 11].…”

Section: Discussionmentioning

confidence: 99%

Improving radiographic patello-femoral tracking in total knee arthroplasty with the use of a flexion spacer: a case–control study

D’Elicio

Attanasio

Ruffo

et al. 2020

Knee Surg Sports Traumatol Arthrosc

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Purpose The purpose of this study was to compare the efectiveness of a lexion spacer in the clinical and radiological outcomes of patients who underwent total knee arthroplasty (TKA) and to compare these patients to a group of patients subjected to the same type of surgery but without the use of a lexion spacer. It was hypothesized that patients who underwent TKA using a lexion spacer would have better clinical and radiological outcomes than those without a lexion spacer in both short-and medium-term follow-ups. Methods A consecutive series of patients undergoing TKA were included, yielding 20 patients in the study group. The control group was identiied from the consultant database of the senior author, yielding 21 patients who underwent the same operation. All 41 patients received a Vanguard Knee System (Zimmer-Biomet, Warsaw, Indiana, USA). Cases were deined as those patients who had undergone TKA using a lexion spacer device for gap balancing; controls were deined as patients who had undergone TKA without the support of a lexion spacer device. Patients were clinically and radiographically evaluated at two consecutive follow-ups: T 1 -13.1 ± 1.3 months and T 2 -108 ± 6 months. Clinical evaluation was performed using the Knee Society Scoring System and the Western Ontario, McMaster Universities Osteoarthritis Index score. Radiographic evaluation included the femoral angle (α), the tibial angle (β), the sagittal femoral (γ) angle and the tibial slope (δ). Furthermore, the lateral patellofemoral angle (LPFA) and the Caton-Deschamps index were evaluated. ResultsNo statistically signiicant clinical diferences were found between the two groups at T 1 and T 2 ; moreover, the clinical outcomes of the two groups were stable between the two follow-ups, with no signiicant improvement or worsening. Radiographic evaluation showed no diference in the two groups between T 1 and T 2 ; the only signiicant radiographic diference between the two groups concerned the LPFA (both at 30° and 60°) at each follow-up, which was signiicantly greater in cases than in controls (p = 0.001). Conclusions The current study demonstrates that the use of a lexion spacer signiicantly improves radiographic patellofemoral tracking, although no signiicant clinical diferences were found between the two groups. Level of evidence Case-control study, level III.

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“…Neben der Analyse der Patellaform präoperativ, ist die Dickenmessung des Resektats an verschiedenen Zonen relevant, um das Problem zu lösen. Bei der Positionierung der Patellakomponente sollte eine laterale Position in jedem Fall vermieden werden, es wird die zentrale oder leicht medialisierte Position empfohlen [24,25].…”

Section: Patellare Ursacheunclassified

Vermeidung des patellofemoralen Overstuffings

Graichen

2015

Z Orthop Unfall

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Reconstruction of the patello-femoral compartment and by that avoidance of an overstuffing is one of the important steps for a successful TKA. A revision rate of around 15 % due to problems of the patello-femoral compartment demonstrates that this is not achieved in all cases. There can be many reasons for an overstuffing and also the symptoms can be very variable, showing sometimes a limited flexion, patello-femoral maltracking or anterior knee pain. Due to its relevance the following paper demonstrates the different reasons for a patello-femoral overstuffing. Further possible solutions for avoidance of overstuffing are described. The reasons for patello-femoral overstuffing are multiple. The majority is caused on the femoral side, however additional patellar and tibial reasons exist. During positioning of the femora resection blocks, the distal resection plane (extension/flexion) as well as the AP block for sizing is crucial. For that a pre-op analysis and implant planning in the lateral view of the X-ray should be performed in order to optimise implant size and position. For the patella the correct resection height and plane are important to avoid an overstuffing. A lateral patella component position can be another reason for an overstuffing. In conclusion, it can be stated that an anatomic reconstruction of the patello-femoral compartment is an important part of TKA surgery. The avoidance of a patello-femoral overstuffing can be achieved by exact pre-op planning of the femoral component size and position, and by precise surgery with sufficient bone resection.

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Comparison of the Insall-Burstein II and NexGen Legacy Total Knee Arthroplasty Systems with Respect to Patella Complications

Cited by 13 publications

References 15 publications

Cruciate-retaining TKA Using a Third-generation System with a Four-pegged Tibial Component: A Minimum 10-year Followup Note

Cruciate-retaining TKA Using a Third-generation System with a Four-pegged Tibial Component: A Minimum 10-year Followup Note

Improving radiographic patello-femoral tracking in total knee arthroplasty with the use of a flexion spacer: a case–control study

Vermeidung des patellofemoralen Overstuffings

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