High hip center technique using a biconical threaded Zweymüller cup in osteoarthritis secondary to congenital hip disease.
Title | High hip center technique using a biconical threaded Zweymüller cup in osteoarthritis secondary to congenital hip disease. |
Publication Type | Journal Article |
Year of Publication | 2010 |
Authors | Christodoulou, N. A., Dialetis K. P., & Christodoulou A. N. |
Journal | Clin Orthop Relat Res |
Volume | 468 |
Issue | 7 |
Pagination | 1912-9 |
Date Published | 2010 Jul |
ISSN | 1528-1132 |
Keywords | Adult, 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. |
DOI | 10.1007/s11999-009-1203-1 |
Alternate Journal | Clin. Orthop. Relat. Res. |
PubMed ID | 20049571 |
PubMed Central ID | PMC2882016 |