Incidence of contralateral THA after index THA for osteoarthritis.
Clin Orthop Relat Res
; 470(2): 535-40, 2012 Feb.
Article
en En
| MEDLINE
| ID: mdl-21968900
BACKGROUND: Currently more than 200,000 THAs are performed annually in the United States. In patients with bilateral disease, the chance of subsequent contralateral THA reportedly ranges from 16% to 85%. Factors influencing contralateral THA are not completely understood. QUESTIONS/PURPOSES: We therefore determined (1) the 10-year probability free of progression to contralateral THA after index THA, (2) whether demographics differed between those who did and did not ultimately undergo contralateral THA, and (3) whether initial clinical symptoms and/or degree of radiographic osteoarthritis affects progression. PATIENTS AND METHODS: We retrospectively identified 332 patients with minimum 24-month followup and primary osteoarthritis who underwent unilateral THA between 2001 and 2008. There were 150 men and 182 women with a mean age of 61 years (range, 27-93 years) and a mean BMI of 29.6 kg/m(2) (range, 17.6-49.2 kg/m(2)). We reviewed clinical, radiographic, and demographic data at index THA and last followup and classified patients as low, indeterminate, or high risk of undergoing contralateral THA. RESULTS: Seventy-four of the 332 patients (22%) underwent contralateral THA, resulting in an 83% 10-year probability free of progression to the contralateral hip. Low-risk patients had a less than 1% chance of progression, indeterminate-risk patients had a 16% to 24% chance of progression, and high-risk patients had a 97% chance of progression. CONCLUSIONS: Indeterminate-risk patients may be managed nonoperatively and deserve further study with a larger multicenter analysis. We defined high- and low-risk patients who may be candidates for bilateral THA or may rarely need a contralateral THA. LEVEL OF EVIDENCE: Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Osteoartritis de la Cadera
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Artroplastia de Reemplazo de Cadera
Tipo de estudio:
Diagnostic_studies
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Etiology_studies
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Guideline
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Incidence_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
País/Región como asunto:
America do norte
Idioma:
En
Revista:
Clin Orthop Relat Res
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos