Midterm clinical results of the Autocentric II patellofemoral prosthesis

Wagenberg, J. M. F. van; Speigner, B.; Gosens, Taco; Malefijt, J. de Waal

doi:10.1007/s00264-009-0719-z

Cited by 44 publications

(23 citation statements)

References 21 publications

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“…Our study confirms acceptable early results and functional outcomes for the Zimmer PFJR, which are comparable to similar implants and brands reported in the NJR 21) and literature 10 14 16 18 28) ( Table 1 ). Our revision rate for this study was 4%, which is similar to the cumulative probability of a first revision at 3 years of 5.42% reported in the NJR 21) for PFJR implants.…”

Section: Discussionsupporting

confidence: 89%

“…Other first generation implants fared slightly better. van Wagenberg et al 10) reported a 5-year survival rate of 75% for the Autocentric II (DePuy, Warsaw, IN, USA) prosthesis. Much better though was the Richards II (Smith & Nephew, London, UK) which had an 84% survivorship at 10 years in the series of 181 knees reported by van Jonbergen et al 11) Most of the complications from these early implants centred on the problem of persisting patellofemoral symptoms due to patellar maltracking, subluxation, catching and eventual failure.…”

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confidence: 99%

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Patellofemoral Joint Arthroplasty: Early Results and Functional Outcome of the Zimmer Gender Solutions Patello-Femoral Joint System

et al. 2017

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BackgroundImproved knee prosthesis designs have led to an increase in the use of patellofemoral arthroplasty as a primary treatment option in recent times. We report the early results and outcomes of the Zimmer Gender Solutions Patello-Femoral Joint (PFJ) system used to treat isolated patellofemoral osteoarthritis (PFA).MethodsWe retrospectively reviewed and analysed data of patients who underwent PFJ replacement (PFJR) at our institution with a minimum follow-up of 2 years.ResultsMedian Oxford Knee score (OKS) was 38 (interquartile range, 28 to 42) at the latest follow-up with a significant improvement from preoperative scores (p < 0.0005). Median OKS was 40 for unilateral PFJRs and 39 for nonobese patients (body mass index [BMI] < 30 kg/m2). There was no significant difference in OKS between unilateral and bilateral procedures (p = 0.462). Likewise, there was no significant difference in OKS between obese and nonobese patients (p = 0.272). Two knees (4%) were revised for progression of osteoarthritis. No complications were reported related to infectious or thromboembolic causes.ConclusionsOur study showed good early results of the PFJ system, at least equal to those of other leading brands in the National Joint Registry for England, Wales and Northern Ireland (NJR). There have been no complications related to either the implantation technique or prosthetic design for this new implant. Progression of tibiofemoral arthritis remains a major concern. Our study also suggests that PFJR in obese patients and bilateral procedures can have good results.

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Section: Discussionsupporting

confidence: 89%

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confidence: 99%

Patellofemoral Joint Arthroplasty: Early Results and Functional Outcome of the Zimmer Gender Solutions Patello-Femoral Joint System

et al. 2017

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“…46 47 Some authors reported that tibiofemoral OA progression is more frequent in obese patients and when the indication is primary PFOA compared with those affected by trochlear dysplasia. 10 46 47 48 49 50 Aseptic loosening is another possible cause of revision and is more frequent in cementless PFA. 10 Van der List et al 42 published a systematic review, including 39 studies evaluating failures after PFA.…”

Section: Complications and Failurementioning

confidence: 99%

Patellofemoral Arthroplasty: Current Concepts and Review of the Literature

Pisanu

Rosso

Bertolo

et al. 2017

Joints

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Patellofemoral osteoarthritis (PFOA) can be associated with anterior knee pain, stiffness, and functional impairment. Some authors report that PFOA affects approximately 9% of patients older than 40 years with a greater prevalence in females. Etiology of PFOA is multifactorial and is related to the presence of abnormal stresses at the PF joint due to knee- and patient-related factors. The need for a joint preserving treatment by isolated replacement of the injured compartment of the knee led to the development of PF arthroplasty (PFA). When a correct PF replacement is performed, PFA preserves physiologic tibiofemoral joint, thus allowing patients for a rapid recovery with a high satisfaction. The outcomes for PFA are quite variable with a trend toward good to excellent results, mainly owing to the improvement in surgical techniques, patient selection, and implant design. The development of the second generation of PFA improved the outcomes, which is attributed to the different trochlear designs. Recently, encouraging results have been provided by the association of PFA and unicompartmental knee arthroplasty (UKA). In many studies, the main cause of PFA failure is progression of tibiofemoral OA. The aim of this brief review of literature is to summarize the clinical features, indications and contraindications, surgical techniques, complications, and outcomes of PFA.

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“…Early implant designs had sharp, constraining trochlear grooves that were prone to complications such as maltracking and catching of the patella, thus leading to high revision rates [1][2][3]. However, modern PFA designs have improved on the problems that led to failure of the initial prostheses, making PFA a reasonable alternative to Total Knee Arthroplasty (TKA) in younger patients with isolated patellofemoral arthritis.…”

Section: Introductionmentioning

confidence: 99%