title: Testing of total hip replacements: endurance tests and stress measurements. Part 2: Stress measurements.
abstract: Brittle lacquer techniques and electric resistance strain gauge rosettes were used to measure strains on the stems of total hip replacements while loaded according to three standards. The stresses in these locations were also calculated and good agreement was found between the measured and calculated values. The Sines equation was used to calculate the endurance limit stress. Again good agreement was found with observed results. Suggestions are made regarding the endurance testing of hip prostheses.
authors.affiliation: Department of Mechanical and Manufacturing Engineering, Queen's University of Belfast, Northern Ireland.
authors.forename: P K
authors.initials: PK
authors.lastname: Humphreys
authors.forename: J F
authors.initials: JF
authors.lastname: Orr
authors.forename: A S
authors.initials: AS
authors.lastname: Bahrani
mesh_terms: D006622:Hip Prosthesis; D008422:Materials Testing; D011474:Prosthesis Design; D013314:Stress, Mechanical