Total Hip Arthroplasty With Use of the Cementless Zweymüller Alloclassic System

García-Cimbrelo, Eduardo; Cruz-Pardos, Ana; Madero, Rosário; Ortega-Andreu, Miguel

doi:10.2106/00004623-200302000-00017

Cited by 139 publications

(81 citation statements)

References 27 publications

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“…However, the second generation showed higher survival rates, as many publications report. Ten-year survival rates of 93.4% [11] and 99.4% [3] and 12-year survival rates of 97% [10] were found for Zweymueller threaded cups.…”

Section: Discussionmentioning

confidence: 89%

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Factors influencing the revision rate of Zweymueller acetabular cup

Effenberger

Ramsauer

Dorn

et al. 2004

International Orthopaedics

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Between January 1986 and December 1988, we implanted 220 conical-shaped Zweymueller threaded cups in 202 patients whose average age was 65 (33-83) years. The average thickness of the polyethylene (PE) insert was 8.0 (5.4-11.9) mm. In 142 cases, the corresponding femoral head was a 32 mm Al2O3 head. We followed 157 patients for a mean of 9.2 (1-16) years. Nine cups were revised and ten PE inserts replaced after an average of 11.9 (10-13.3) years. With cup revision alone considered as failure, the survival rate after 13 years was 89%. When both cup and insert revisions were considered failures, the survival rate decreased to 72% after 13 years. Patients younger than 60 years had a significantly higher rate of insert revision. Cup size 55 showed significantly more revisions in comparison to larger sizes. Using Cox regression model, neither gender, body mass index, nor material were risks factors leading to cup revision.

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Section: Discussionmentioning

confidence: 89%

“…Garcia-Cimbrelo et al [10] reported an average polyethylene wear rate of 0.08 mm/year for 28 mm femoral heads, whereby 0.2 mm polyethylene wear in 32 mm femoral heads was significantly higher. Grübel et al [11] using 32 mm femoral heads found a total of 0.1 mm wear/ year.…”

Section: Discussionmentioning

confidence: 99%

Factors influencing the revision rate of Zweymueller acetabular cup

Effenberger

Ramsauer

Dorn

et al. 2004

International Orthopaedics

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“…In our series we documented ten-year Kaplan-Meier survival of 98.4 % (95 % CI 96.6-100 %) with stem revision and any component revision as the endpoints, and 100 % with cup revision as the endpoint. We compared our results with those of published studies on the original system in primary THA as Table 3 [4,[6][7][8][9][10][11][12]. In these studies, the ten-year Kaplan-Meier survival rates range from 98.9 % to 100 % for the stem [7][8][9]11], from 93 % to 99 % for the cup [7,9,11] and from 92 % to 98 % for the entire system (i.e.…”

Section: Discussionmentioning

confidence: 99%

“…In these studies, the ten-year Kaplan-Meier survival rates range from 98.9 % to 100 % for the stem [7][8][9]11], from 93 % to 99 % for the cup [7,9,11] and from 92 % to 98 % for the entire system (i.e. any component revision as endpoint) [4,6,7,[9][10][11][12].…”

Section: Discussionmentioning

confidence: 99%

“…Although many studies have documented mid to long-term clinical outcomes with the original system [4][5][6][7][8][9][10][11][12], only a few have been published on the novel system [2,3,13]. To aid healthcare decision-making, we reviewed the results of THAs performed with the novel system at a single centre, and compared these results with those reported in the literature for the original stem.…”

Section: Introductionmentioning

confidence: 99%

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Long-term follow-up of primary total hip arthroplasty with the Alloclassic Variall system

Hochreiter¹,

Brusaferri

Kirschbichler³

et al. 2015

International Orthopaedics (SICOT)

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Purpose The aim of the present study was to evaluate the clinical and radiographic results of primary total hip arthroplasty (THA) performed with the Alloclassic Variall system (a modified version of the Alloclassic Zweymüller system) and to compare them with those in the literature for the original system. Methods Between January 2001 and December 2002, 273 consecutive primary THAs were performed in 259 patients at a single centre with the study system, using ceramic-onceramic (81.7 %) or ceramic-on-highly-crosslinkedpolyethylene (18.3 %) articulations. Results At the time of this study, 28 patients (29 hips; 10.6 %) had died and 40 (43 hips; 15.8 %) were lost to follow-up. Seventeen patients (19 hips; 7.0 %) could be reached only by telephone. There were four revisions in four patients (1.5 %), all involving only the femoral component. Ten-year Kaplan-Meier survival with revision of any component for any reason as the endpoint was 98.4 % (95 % confidence interval: 96.9-100 %; 30 hips remained 'at risk'). A total of 170 unrevised patients (178 hips; 65.2 %) were assessed clinically and radiographically at a median follow-up of 9.3 years (interquartile range [IQR] 8.8-9.8 years). The median Harris hip score (HHS) was 99.9 points (IQR 97.7-100). The score did not differ significantly between the two articulations. There was no sign of radiographic loosening. Conclusions The ten-year implant survival and the HHS score outcomes for THAs performed with the novel system were in line with those documented in the literature for its predecessor.

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Characterization, quantification, and isolation of aluminum oxide particles on grit blasted titanium aluminum alloy hip implants

et al. 2007

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Remnants of grit blasting were found only on the surfaces; none were observed on cross-sections. We conclude that the microstructure of titanium aluminum alloy does not interfere with the identification and quantification of particles. Particles were identified on the filters by electron microscopy and X-ray microanalysis. Aluminum oxide on the surface of grit-blasted titanium aluminum alloy implants is, in fact, a residue of grit blasting.

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Total Hip Arthroplasty With Use of the Cementless Zweymüller Alloclassic System

Cited by 139 publications

References 27 publications

Factors influencing the revision rate of Zweymueller acetabular cup

Factors influencing the revision rate of Zweymueller acetabular cup

Long-term follow-up of primary total hip arthroplasty with the Alloclassic Variall system

Characterization, quantification, and isolation of aluminum oxide particles on grit blasted titanium aluminum alloy hip implants

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