[Evaluation of Loosening of Different Total Hip Models and Neck Lengths (author's Transl)]

Overview

Journal Arch Orthop Unfallchir

Specialties Emergency Medicine
Orthopedics

Date 1976 Nov 18

PMID 1008730

Citations 4

Authors

D Tonnis

H Asai

Affiliations

Soon will be listed here.

Abstract

The percentage of aseptic loosening of different types of total hip prostheses in 771 cases has been evaluated. The time of follow-up ranged between 1/2 and 6 years. In prostheses of the Charnley-Müller type of loosening was 7.8% in the Charnley-Müller-Weller type with a 2-year shorter follow-up it was 2.4%. No loosening was found during the last 2 1/2 years when the prosthesis of Beck was used, which has an increased femoral shaft-neck angle and a longer stem. When a longer neck was used, the loosening averaged 5.6%. In cases of normal neck-length it was 3.6%. From the biomechanical standpoint it seems preferable to use prostheses with an increased shaft-neck angle. Comparing the rates of loosening as reported in the literature it appears that prostheses where the femur is displaced medially (by a small femoral head or increased shaft-neck angle) show a very low rate of loosening. Models with metal sockets (McKee-Farrar and Weber-Huggler) seem to have a higher rate of loosening than models with polyethylene sockets.

Citing Articles

Technological test-methods for hip prostheses.

Ungethum M Arch Orthop Trauma Surg (1978). 1980; 97(4):285-92.

PMID: 7458613 DOI: 10.1007/BF00380710.

An analysis of 119 loosenings in total hip endoprostheses.

Bosch P, KRISTEN H, Zweymuller K Arch Orthop Trauma Surg (1978). 1980; 96(2):83-90.

PMID: 7377936 DOI: 10.1007/BF00433286.

Results of alloarthroplasty of the hip joint.

Oberthaler W, Bauer R, Sattler K Arch Orthop Trauma Surg (1978). 1980; 96(4):247-58.

PMID: 6994678 DOI: 10.1007/BF00432862.

Failures of total hip arthroplasty and probable incidence of revision surgery in the future. Calculations according to a mathematical model based on a ten years' experience in total hip arthroplasty.

Morscher E, Schmassmann A Arch Orthop Trauma Surg (1978). 1983; 101(2):137-43.

PMID: 6847350 DOI: 10.1007/BF00433274.

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