Journals / İstanbul Medical Journal / 2021 / Cilt: 22 - Sayı: 3

Evaluation of the Risk Factors Associated with Dislocation Following Cementless Bipolar Hemiarthroplasty of the Hip in Elderly Patients: A Nested Case-Control Study

Yaşlı Hastalarda Çimentosuz Bipolar Kalça Hemiartroplastisi Sonrası Çıkık Gelişimi ile İlişkili Risk Faktörlerinin Değerlendirilmesi: Yuvalandırılmış Olgu Kontrol Çalışması

Pages
208–212
Publication Date
2022-10-19
DOI
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Two independent risk factorsassociated with dislocation, namely, infection and dementia,were identified during multivariate model analysis.Conclusion: Patients with postoperative surgical site infectionor dementia are at greater risk for developing dislocation aftercementless BHA.

📌 3 Key Takeaways

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Objective & Hypothesis:Introduction: Although a well-known advantage of thecementless fixation technique is that it prevents bone cementimplantation syndrome, with lower perioperative mortality,the risk factors associated with dislocation after cementlessbipolar hemiarthroplasty (BHA) have not yet been sufficientlyinvestigated.
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Key Findings & Data:Clinical and radiographic outcome measureswere then assessed to determine the risk factors for dislocationfollowing BHA.Results: Of the 103 patients available for the analyses inthe current study, 23 patients (12 females, 11 males) withdislocation were selected as the study group and 70 patients(33 females, 37 males) without dislocation were included inthe control group.
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Conclusion & Impact:Two independent risk factorsassociated with dislocation, namely, infection and dementia,were identified during multivariate model analysis.Conclusion: Patients with postoperative surgical site infectionor dementia are at greater risk for developing dislocation aftercementless BHA.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Introduction: Although a well-known advantage of thecementless fixation technique is that it prevents bone cementimplantation syndrome, with lower perioperative mortality,the risk factors associated with dislocation after cementlessbipolar hemiarthroplasty (BHA) have not yet been sufficientlyinvestigated. This study aimed to investigate the incidenceof dislocation following cementless BHA of the hip in elderlypatients with displaced femoral neck fractures. The related riskfactors are also examined.Methods: In this nested case-control study, patients who hadundergone BHA for femoral neck fracture at a single tertiaryreferral center were retrospectively reviewed. Three controlpatients from the cohort who had not experienced dislocationwere selected for each patient who developed dislocationfollowing BHA. Clinical and radiographic outcome measureswere then assessed to determine the risk factors for dislocationfollowing BHA.Results: Of the 103 patients available for the analyses inthe current study, 23 patients (12 females, 11 males) withdislocation were selected as the study group and 70 patients(33 females, 37 males) without dislocation were included inthe control group. Univariate analyses revealed significantdifferences between the two groups in terms of numberof postoperative surgical site infections, dementia, centeredgeangle, and femoral offset. Two independent risk factorsassociated with dislocation, namely, infection and dementia,were identified during multivariate model analysis.Conclusion: Patients with postoperative surgical site infectionor dementia are at greater risk for developing dislocation aftercementless BHA.

Özet

Amaç: Çimentosuz fiksasyon tekniğinin iyi bilinen avantajları, düşük perioperatif mortalite ile kemik çimentosu implantasyon sendromunu önlemesi olmasına rağmen, çimentosuz bipolar hemiartroplasti (BHA) sonrası dislokasyona bağlı risk faktörleri henüz literatürde yeterince araştırılmamıştır. Bu çalışma, yer değiştirmiş femur boynu kırığı olan yaşlı hastalarda kalçanın çimentosuz BHA’sını takiben çıkık insidansını ve ilişkili risk faktörlerini araştırmayı amaçladı. Yöntemler: Bu yuvalanmış olgu kontrol çalışmasında, tek bir üçüncü basamak merkezde femur boyun kırığı nedeniyle BHA uygulanmış hastalar geriye dönük olarak incelendi. BHA’yı takiben çıkık gelişen her hasta için kohortlardan çıkık yaşamamış üç kontrol hastası seçildi. BHA sonrası dislokasyon gelişimi ile ilgili risk faktörlerini belirlemek adına çeşitli klinik ve radyografik sonuç ölçütleri değerlendirildi. Bulgular: Analiz için uygun olduğu belirlenen toplam 103 hasta arasından dislokasyon geliştirmiş olan 23 hasta (12 kadın, 11 erkek) çalışma grubu olarak seçildi. Kontrol grubuna çıkık geliştirmemiş toplam 70 hasta (33 kadın, 37 erkek) dahil edildi. Tek değişkenli analizler, postoperatif cerrahi alan enfeksiyonlarının sayısı, demans, merkez kenar açısı ve femoral off-set açısından iki grup arasında önemli farklılıklar ortaya koydu. Çok değişkenli model analizinde, dislokasyonla ilişkili iki bağımsız risk faktörleri olarak: Enfeksiyon ve demans tespit edildi. Sonuç: Ameliyat sonrası cerrahi alan enfeksiyonu veya demansı olan hastalar çimentosuz BHA’dan sonra dislokasyon gelişme riski altındadır.

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Cite This Article

DEMİREL, M., ÖZTÜRKMEN, Y., BİRİŞİK, F., BİLGİN, Y. (2022). Evaluation of the Risk Factors Associated with Dislocation Following Cementless Bipolar Hemiarthroplasty of the Hip in Elderly Patients: A Nested Case-Control Study. İstanbul Medical Journal, Cilt: 22 - Sayı: 3, 208–212. https://ajindex.com/articles/551806

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