30-years of Experience with the Cementless Implanted Alloclassic Total Hip Arthroplasty System-An Ultra-long-term Follow-up

Overview

Journal J Orthop

Specialty Orthopedics

Date 2017 Dec 1

PMID 29187778

Citations 12

Authors

Lorenz Pisecky

Gunter Hipmair

Bernhard Schauer

Nikolaus Bohler

Affiliations

Soon will be listed here.

Abstract

Objective: The aim of this study was to evaluate our long-term results with the Zweymüller hochgezogen and SL total hip arthroplasty system. This is the first study to provide a 30-year follow-up.

Methods: We reviewed 186 Alloclassic stem systems (Zweymüller hochgezogen (112) and SL (74), implanted in 179 patients from 1986 to 1987.Two different types of cementless acetabular components were used.143 patients had died over the last 30 years, so thirty out of 36 patients being still alive, with a mean follow-up of 29,48 years (SD 0,51), were contacted by telephone and evaluated radiologically and clinically. Our loss-to-follow up was 16,7%. The mean age at follow-up was 83,57 years (72,4-95,2; SD 6,77).

Results: If the endpoint is defined as the removal of the stem for aseptic loosening (3 cases), the overall survival rate is 98,38%. If the endpoint is revision for any reason (27 cases), the survival rate is 85,48%. Eleven patients needed an exchange of head and liner. The mean time from implantation until change of head and liner was 21,44 years (SD 5,92).Most of the radiolucent lines and osteolytic zones were found in the proximal Gruen-zones 1 and 7 (69,7 and 21,2%).

Conclusion: After 30 years of monitoring we can state that the evaluated system is very reliable in primary and secondary THA.

Citing Articles

Periprosthetic femoral fractures in minimally-invasive anterolateral short stem versus transgluteal straight stem cementless total hip arthroplasty: What are the differences in the femoral and pelvic morphology?.

Luger M, Feldler S, Gahleitner M, Pisecky L, Gotterbarm T, Stadler C J Orthop Surg Res. 2025; 20(1):110.

PMID: 39881405 PMC: 11776236. DOI: 10.1186/s13018-025-05502-y.

Short versus conventional straight stem in uncemented total hip arthroplasty: functional outcomes up to 5 years and survival up to 12 years: secondary results of a randomized controlled trial.

Van Beers L, Scheijbeler E, Van Oldenrijk J, Geerdink C, Niers B, Willigenburg N Acta Orthop. 2024; 95:99-107.

PMID: 38318961 PMC: 10846089. DOI: 10.2340/17453674.2024.39964.

Battle of the titans: Survivorship analysis of the 3 most common types of uncemented femoral stems used across national registries.

Davey M, Doyle T, Murphy E, Fenelon C, Murphy C, Cassar-Gheiti A J Orthop. 2023; 43:41-47.

PMID: 37564704 PMC: 10409998. DOI: 10.1016/j.jor.2023.07.010.

High Subsidence Rate After Primary Total Hip Arthroplasty Using a Zweymüller-type Noncemented Implant With a Matte Surface.

Kawai T, Goto K, Kuroda Y, Okuzu Y, Matsuda S J Am Acad Orthop Surg Glob Res Rev. 2022; 6(6).

PMID: 35679522 PMC: 9177248. DOI: 10.5435/JAAOSGlobal-D-21-00126.

The 'critical trochanter angle' does not show superiority over the CCD angle in predicting varus stem alignment in cementless short-stem total hip arthroplasty.

Luger M, Feldler S, Pisecky L, Allerstorfer J, Gotterbarm T, Klasan A Arch Orthop Trauma Surg. 2022; 143(1):529-537.

PMID: 35020039 PMC: 9886626. DOI: 10.1007/s00402-022-04340-5.

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