The english version of the website is under development. Wherever text appears in Greek, it means it has not been translated yet.

Δημοσίευση

High hip center technique using a biconical threaded Zweymüller cup in osteoarthritis secondary to congenital hip disease.

TitleHigh hip center technique using a biconical threaded Zweymüller cup in osteoarthritis secondary to congenital hip disease.
Publication TypeJournal Article
Year of Publication2010
AuthorsChristodoulou, N. A., Dialetis K. P., & Christodoulou A. N.
JournalClin Orthop Relat Res
Volume468
Issue7
Pagination1912-9
Date Published2010 Jul
ISSN1528-1132
KeywordsAdult, Aged, Arthroplasty, Replacement, Hip, Female, Hip Dislocation, Congenital, Hip Joint, Hip Prosthesis, Humans, Male, Middle Aged, Osteoarthritis, Hip, Polyethylene, Prosthesis Failure, Reoperation, Retrospective Studies, Titanium
Abstract

BACKGROUND: The high hip center technique used for a deficient acetabulum is reconstruction of the hip at a high center of rotation. In the literature, there is no consensus regarding the value of this technique.QUESTIONS/PURPOSES: We investigated whether the new-generation biconical threaded Zweymüller cup fixed in a high nonanatomic position in patients with arthritis secondary to congenital hip disease experienced different rates of polyethylene wear and long-term survivorship when compared with anatomically positioned cups.PATIENTS AND METHODS: We studied the polyethylene wear rate and Kaplan-Meier survivorship of 104 titanium threaded Zweymüller cups in 88 patients (81 females), placed in 70 hips at near-normal hip center and in 34 hips at a high hip center position at a distance of 31.1 to 60 mm (mean, 39.7 mm) from the interteardrop line. Minimum followup was 2 years (mean +/- SD, 8.6 +/- 3.5 years; range, 2-15 years).RESULTS: The mean linear polyethylene wear rates in the near-normal and high hip center groups were not different (0.110 +/- 0.050 mm and 0.113 +/- 0.057 mm, respectively). The Kaplan-Meier 15-year cup survivorship rates with revision for any reason as an event of interest in the near-normal and high hip center groups also were not different (97.2% [95% confidence interval, 88.5%-99.3%] and 97.1% [95% confidence interval, 73.8%-99.3%], respectively).CONCLUSIONS: The high hip center technique using a biconical threaded Zweymüller cup in patients with arthritis secondary to congenital hip disease results in a polyethylene wear rate and long-term cup survivorship comparable to those observed in anatomically positioned cups.LEVEL OF EVIDENCE: Level III, therapeutic study. See the Guidelines for Authors for a complete description of level of evidence.

DOI10.1007/s11999-009-1203-1
Alternate JournalClin. Orthop. Relat. Res.
PubMed ID20049571
PubMed Central IDPMC2882016

Contact

Secretariat of the School of Medicine
 

Connect

School of Medicine's presence in social networks
Follow Us or Connect with us.