Risk of Hip Arthroplasty After Open Reduction Internal Fixation of a Fracture of the Acetabulum: A Matched Cohort Study
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Résumé
OBJECTIVES: To determine what proportion of operatively treated acetabular fracture patients proceeded to total hip arthroplasty (THA), over what time period, and quantify the influence of patient, provider, and surgical factors on rates of THA. DESIGN: Retrospective matched cohort prognostic study using administrative data. SETTING: This study used the large population database of Ontario (population 13,125,000 in 2010), Canada. PARTICIPANTS: Patients who underwent open reduction internal fixation (ORIF) of an acetabulum fracture between 1996 and 2010 in the province of Ontario were identified from administrative health databases. METHOD: Each patient was matched to 4 individuals from the general population according to age, sex, income, and urban/rural residence. The rates of THA at 2, 5, and 10 years were compared using time-to-event analysis. The influence of patient, provider, and surgical factors on the risk of eventual THA was examined using a Cox model. INTERVENTION: The primary intervention was ORIF of the acetabulum. MAIN OUTCOME MEASUREMENT: The primary outcome measurement was THA. RESULTS: A total of 1725 eligible patients were identified and were matched to 6900 controls. Among cases, there was a 13.9% (N = 240) rate of hip arthroplasty after a median of 6.25 (interquartile range 3.5-10.1) years, compared with 0.6% (N = 38) among matched controls (relative risk = 25.26). The greatest difference in risk of eventually undergoing a THA was in the first 10 years, after which time the risk in the group that had undergone ORIF acetabulum trended down toward that of the control group. Among surgical patients, risk factors for eventual hip arthroplasty included older age [hazard ratio (HR) 1.035 (1.027, 1.044); P < 0.0001]; female sex [HR 1.65 (1.257, 2.165); P = 0.0003]. Higher surgeon volume revealed a 2.6% decreased risk of arthroplasty for each acetabulum ORIF performed above 10 per year [HR 0.974 (0.960, 0.989); P = 0.0007]. CONCLUSION: Patients who underwent acetabulum fracture ORIF had a 25 times higher prevalence of hip arthroplasty compared with matched controls. THA rate was greater in women, older patients, and patients whom had ORIF performed by low-volume surgeons. LEVEL OF EVIDENCE: Prognostic Level II. See Instructions for Authors for a complete description of levels of evidence.
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Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle