Does the Trunnion Bearing Total Hip Prosthesis Imply Reduced Wear Rates? — Tribological and Statistical Studies in 80 Retrieved Femoral Heads of the Weber-Huggler Type

1986 ◽  
pp. 235-242
Author(s):  
T. Mittlmeier ◽  
W. Plitz ◽  
M. H. Hackenbroch
Keyword(s):  
Hip Prosthesis ◽  
Total Hip Prosthesis ◽  
Wear Rates ◽  
Total Hip ◽  
Femoral Heads ◽  
Statistical Studies

Influence of the taper on the fretting wear of the femoral stem-femoral head taper junction in total hip prosthesis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lucian Capitanu ◽  
Liliana-Laura Badita ◽  
Constantin Tiganesteanu ◽  
Virgil Florescu
Keyword(s):  
Femoral Head ◽  
Hip Prosthesis ◽  
Femoral Stem ◽  
Fretting Wear ◽  
Linear Wear ◽  
Total Hip Prosthesis ◽  
Content Type ◽  
Wear Rates ◽  
Total Hip ◽  
Femoral Heads

Purpose The purpose of this paper is to study the roughness effect on the fixation of taper junction components and surfaces wear in terms of taper surface design. The roughness of the femoral heads’ taper and of the femoral stems’ trunnions can influence the fretting wear of the taper junction. Design/methodology/approach It was analysed whether a microgrooved taper surface of the femoral stem trunnion improves the fixation and reduces the wear rate at the taper junction of the hip prosthesis. Two models have studied: a femoral head with a smooth tapered surface combined with a microgrooved stem trunnion and a femoral head with a smooth tapered surface combined with a trunnion that had a smooth surface of the tapered. To compare the wear evolution between these two models, a computerised finite element model of the wear was used. Findings The results obtained after analysis carried out during millions of loading cycles showed that the depth of the linear wear and the total material loss were higher for the femoral heads joined with microgrooved trunnions. The main conclusion of this paper is that the smooth surfaces of the taper and of the trunnions will ensure a better fixation at the taper junction, and therefore, will reduce the volumetric wear rates. Originality/value A higher fixation of the taper junction will reduce the total hip prosthesis failure and, finally, it will improve the quality and durability of modular hip prostheses.

Research Report 7: A Laboratory Experiment on Total Hip Prosthesis

1966 ◽  
Vol 181 (10) ◽  
pp. 140-141 ◽  
Author(s):  
A. Poli
Keyword(s):  
Stainless Steel ◽  
Femoral Head ◽  
Laboratory Experiment ◽  
Hip Prosthesis ◽  
Weight Bearing ◽  
Research Report ◽  
Mechanical Device ◽  
Total Hip Prosthesis ◽  
Total Hip ◽  
Femoral Heads

A simple mechanical device for testing weight-bearing resistance of total hip prosthesis has been developed. Head and cotyle are submitted to movement very close to that of natural hips of a man walking at 6 km/h. Stainless steel femoral heads have been tested against artificial cotyles made of three different materials: Nylonplast A, Teflon and Delrin. Among the three, Delrin proved the most resistant and safest material for building the cotyle when a steel femoral head is used.

Eccentric Femoral Heads in Total Hip Prosthesis

Radiology ◽  
1974 ◽  
Vol 111 (1) ◽  
pp. 235-235 ◽  
Author(s):  
Lawrence Goodman ◽  
James W. McGee
Keyword(s):  
Hip Prosthesis ◽  
Total Hip Prosthesis ◽  
Total Hip ◽  
Femoral Heads

Intrapelvic Extraction of a Total Hip Prosthesis

1992 ◽  
Vol &NA; (282) ◽  
pp. 154???157 ◽  
Author(s):  
RICHARD P. EVANS ◽  
J. PHILLIP NELSON
Keyword(s):  
Hip Prosthesis ◽  
Total Hip Prosthesis ◽  
Total Hip

Clinical Experiences with a Titanium Alloy Total Hip Prosthesis

1979 ◽  
Vol &NA; (144) ◽  
pp. 166???173 ◽  
Author(s):  
AUGUSTO SARMIENTO ◽  
GREGORY A. ZYCH ◽  
LOREN L. LATTA ◽  
RICHARD R. TARR
Keyword(s):  
Titanium Alloy ◽  
Hip Prosthesis ◽  
Clinical Experiences ◽  
Total Hip Prosthesis ◽  
Total Hip
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