A Wedge-Shaped Uncemented Femoral Component: Survivorship in Patients Younger Than 50 Years at a Mean Follow-Up of 22 Years

Valkering, Lucia J.J.; Biemond, Jacob; Hellemondt, Gijs G. van

doi:10.1016/j.arth.2018.06.009

Cited by 7 publications

(7 citation statements)

References 24 publications

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“…The results of this study group are comparable to to previous published cohorts as shown by Delauny, giving survival rates of 99% for aseptic loosening after a timespan of 7 to 8 years [1]. Other stems with excellent long term results in younger patients such as CLS Spotorno (72.8 any reason after 23.8 years) [10,12,11], Bicontact (93.57% at 12 years) [6,5] and Corail (95% at 12 years) [8,9] show good results up to 24 years of follow-up, but none of the mentioned cohorts give results for a period up to the end of the third decade as we do. Published data does sometimes not focus on the long-term problems such as wear of early polyethylene liners, therefore the reason for aseptic loosenings stays unclear in most cases.…”

Section: Discussionsupporting

confidence: 83%

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Straight stem and threaded cup total hip arthroplasty systems in patients under 60 years of age: outdated or still a benchmark? A report on a cohort of 75 patients after 28.8-30.2 years of follow-up

Pisecky

Allerstorfer

Schauer

et al. 2020

Preprint

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Purpose: The goal of this retrospective observational study of one cohort was to evaluate the long-term outcome in patients younger than 60 years after total hip arthroplasty using a straight uncemented stem and an uncemented threaded cup. Methods: Between 1986 and 1987, 75 hips of 75 patients (mean age: 53.35±6.17 years) were consecutively implanted with an Alloclassic Zweymüller/Alloclassic SL stem and an Alloclassic CSF cup. 44 patients had died over the last 30 years. The remaining 31 patients (mean age: 82.9±6.4years) were reinvited for follow-up examinations. Clinical and radiographic evaluations were carried out. Results: At a mean follow-up of 29.5 (28.8-30.2), 4 patients (5.3%) were lost to follow up. For the endpoint aseptic loosening (defined as the removal of stem or the cup for 2 cases), the overall survival rate is 97.3%. For the endpoint revision for any reason (22 patients), the survival rate is 70.6%. Eleven patients needed an exchange of head and liner due to wear. The mean time from implantation until change of head and liner was 21.44 years (SD 5.92). Other reasons for revisons were septic loosenings (3 cases), aseptic loosening of stem and cup (1 case), aseptic loosening of stem (1 case), periprosthetic calcification (2 cases), implant fracture (1 case), periprosthetic fracture (1 case), intraoperative fissure of stem (1 case), total wear of liner including cup (1 case). Conclusion: The combination of a straight stem (Alloclassic) and a screw cup (CSF) shows excellent results in young patients under the age of 60 at ultra-longterm follow up at 30 years. Revisions due to wear of the polyethylene liner are more likely than in the older patients.

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Section: Discussionsupporting

confidence: 83%

“…Some studies describe longterm results up to 20 years [4]. Other well established stem systems are reported to have excellent long term results such as Bicontact [5,6], Taperloc [7], Corail [8,9], CLS [10][11][12] as well as threaded cups such as T-TAP ST [13].…”

Section: Introductionmentioning

confidence: 99%

Straight stem and threaded cup total hip arthroplasty systems in patients under 60 years of age: outdated or still a benchmark? A report on a cohort of 75 patients after 28.8-30.2 years of follow-up

Pisecky

Allerstorfer

Schauer

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Other stems with excellent long term results in younger patients such as CLS Spotorno (72.8 any reason after 23.8 years) [10,12,11], Bicontact (93.57% at 12 years) [6,5] and Corail (95% at 12 years) [8,9] show good results up to 24 years of follow-up, but none of the mentioned cohorts give results for a period up to the end of the third decade as we do. Published data does sometimes not focus on the long-term problems such as wear of early polyethylene liners, therefore the reason for aseptic loosenings stays unclear in most cases.…”

Section: Discussionmentioning

confidence: 42%

Straight stem and threaded cup in patients under 60 years of age. 28.8-30.2 years of follow-up

Pisecky

Allerstorfer

Schauer

et al. 2020

Preprint

View full text Add to dashboard Cite

Purpose: The aim of this retrospective observational study of one cohort was to evaluate the long-term outcome in patients younger than 60 years after total hip arthroplasty using a straight uncemented stem and an uncemented threaded cup.Methods:Between 1986 and 1987, 75 hips of 75 patients (mean age: 53.35±6.17 years) were consecutively implanted with an Alloclassic Zweymüller/Alloclassic SL stem and an Alloclassic CSF cup. 44 patients had died over the last 30 years. The remaining 31 patients (mean age: 82.9±6.4years) were reinvited for follow-up examinations. Clinical and radiographic evaluations were carried out.Results: At a mean follow-up of 29.5 (28.8-30.2), 4 patients (5.3%) were lost to follow up.For the endpoint aseptic loosening (defined as the removal of stem or the cup for 2 cases), the overall survival rate is 97.3%. For the endpoint revision for any reason (22 patients), the survival rate is 70.6%. Eleven patients needed an exchange of head and liner, caused by wear. The average time from implantation until change of head and liner was 21.44 years (SD 5.92). Other reasons for revison surgery were septic loosening (3 cases), aseptic loosening of stem and cup (1 case), aseptic loosening of stem (1 case), periprosthetic calcification (2 cases), implant fracture (1 case), periprosthetic fracture (1 case), intraoperative fissure of stem (1 case), total wear of liner including cup (1 case).Conclusion: The combination of a straight stem (Alloclassic) and a screw cup (CSF) shows excellent results in young patients under the age of 60 at ultra-longterm follow up at 30 years. Revisions due to wear of the polyethylene liner are more likely than in the older patients.

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“…Within the Czech arthroplasty register, 2677 evaluated stems showed a survival rate of 99.81% after 1 to 11 years [30]. Other stems with excellent long-term results in younger patients such as CLS Spotorno (72.8 any reason after 23.8 years) [10][11][12], Bicontact (93.57% at 12 years) [5,6], and Corail (95% at 12 years) [8,9] show good results up to 24 years of follow-up, but none of the mentioned cohorts give results for a period up to the end of the third decade as we do. Published data does sometimes not focus on the long-term problems such as wear of early polyethylene liners; therefore, the reason for aseptic loosenings stays unclear in most cases.…”

Section: Discussionmentioning

confidence: 99%

“…Some studies describe long-term results up to 20 years [4]. Other wellestablished stem systems are reported to have excellent long-term results such as Bicontact [5,6], Taperloc [7], Corail [8,9], and CLS [10][11][12] as well as threaded cups such as T-TAP ST [13].…”

Section: Introductionmentioning

confidence: 99%

Straight stem and threaded cup in patients under 60 years of age: 28.8–30.2 years of follow-up

et al. 2020

View full text Add to dashboard Cite

Purpose The aim of this retrospective observational study of one cohort was to evaluate the long-term outcome in patients younger than 60 years after total hip arthroplasty using a straight uncemented stem and an uncemented threaded cup. Methods Between 1986 and 1987, 75 hips of 75 patients (mean age, 53.35 ± 6.17 years) were consecutively implanted with an Alloclassic Zweymüller/Alloclassic SL stem and an Alloclassic CSF cup. Forty-four patients had died over the last 30 years. The remaining 31 patients (mean age, 82.9 ± 6.4 years) were reinvited for follow-up examinations. Clinical and radiographic evaluations were carried out. Results At a mean follow-up of 29.5 (28.8–30.2), 4 patients (5.3%) were lost to follow-up. For the endpoint aseptic loosening (defined as the removal of stem or the cup for 2 cases), the overall survival rate is 97.3%. For the endpoint revision for any reason (22 patients), the survival rate is 70.6%. Eleven patients needed an exchange of head and liner, caused by wear. The average time from implantation until change of head and liner was 21.44 years (SD 5.92). Other reasons for revision surgery were septic loosening (3 cases), aseptic loosening of stem and cup (1 case), aseptic loosening of stem (1 case), periprosthetic calcification (2 cases), implant fracture (1 case), periprosthetic fracture (1 case), intraoperative fissure of stem (1 case), and total wear of liner including cup (1 case). Conclusion The combination of a straight stem (Alloclassic) and a screw cup (CSF) shows excellent results in young patients under the age of 60 at ultra-long-term follow-up at 30 years. Revisions due to wear of the polyethylene liner are more likely than in the older patients.

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A Wedge-Shaped Uncemented Femoral Component: Survivorship in Patients Younger Than 50 Years at a Mean Follow-Up of 22 Years

Cited by 7 publications

References 24 publications

Straight stem and threaded cup total hip arthroplasty systems in patients under 60 years of age: outdated or still a benchmark? A report on a cohort of 75 patients after 28.8-30.2 years of follow-up

Straight stem and threaded cup total hip arthroplasty systems in patients under 60 years of age: outdated or still a benchmark? A report on a cohort of 75 patients after 28.8-30.2 years of follow-up

Straight stem and threaded cup in patients under 60 years of age. 28.8-30.2 years of follow-up

Straight stem and threaded cup in patients under 60 years of age: 28.8–30.2 years of follow-up

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