title: Are titanium-on-titanium TiAl6V4 modular necks safe in total hip arthroplasty for non-overweight patients? Results of a prospective series at a minimum follow-up of 7 years.
abstract: Using extramedullar modularity in total hip arthroplasty has been proposed as an option to optimize the restoration of hip biomechanics. To avoid the problems that were observed with cobalt-chrome modular neck, titanium modular necks have been developed. The goals of our study were to evaluate the safety of titanium-on-titanium TiAl6V4 modular neck system. Hundred patients with a mean age of 69.6 ± 10.6 (42-86 years) and mean BMI of 25.07 ± 4.86 (17-38 kg/m(2)) suffering from primary or secondary arthritis of the hip were prospectively included. At a minimum of 7 years, no fracture of the modular neck was observed. No patient required a revision. No sign of loosening was found in the radiological analysis. Our study shows that titanium-on-titanium TiAl6V4 modular neck system can safely be used with good midterm clinical and radiological results for non-overweight patients. These results should be confirmed at longer follow-up.
authors.affiliation: Department of Orthopaedic Surgery, APHM, Institute for Locomotion, Sainte-Marguerite Hospital, 13009, Marseille, France.|CNRS, ISM UMR 7287, Aix-Marseille University, 13009, Marseille, France.
authors.forename: Matthieu
authors.initials: M
authors.lastname: Ollivier
authors.affiliation: Department of Orthopaedic Surgery, APHM, Institute for Locomotion, Sainte-Marguerite Hospital, 13009, Marseille, France. sebparratte@gmail.com.|CNRS, ISM UMR 7287, Aix-Marseille University, 13009, Marseille, France. sebparratte@gmail.com.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Parratte
authors.affiliation: Department of Orthopaedic Surgery, APHM, Institute for Locomotion, Sainte-Marguerite Hospital, 13009, Marseille, France.|CNRS, ISM UMR 7287, Aix-Marseille University, 13009, Marseille, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Galland
authors.affiliation: Department of Orthopaedic Surgery, APHM, Institute for Locomotion, Sainte-Marguerite Hospital, 13009, Marseille, France.|CNRS, ISM UMR 7287, Aix-Marseille University, 13009, Marseille, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Lunebourg
authors.affiliation: Department of Orthopaedic Surgery, APHM, Institute for Locomotion, Sainte-Marguerite Hospital, 13009, Marseille, France.|CNRS, ISM UMR 7287, Aix-Marseille University, 13009, Marseille, France.
authors.forename: Jean-Noel
authors.initials: JN
authors.lastname: Argenson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D015992:Body Mass Index; D001835:Body Weight / Q000502:physiology; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D013997:Time Factors; D014025:Titanium / Q000627:therapeutic use*; D016896:Treatment Outcome
chemical_list: D014025:Titanium
keywords: Cementless; Modular; Survival; THA; Titanium neck