A Hernández1, J H Nuñez2, I Mimendia1, V Barro3, L Azorin1. 1. Unidad de Cadera, Departamento de Cirugía Ortopédica y Traumatología, Hospital Universitario Vall d'Hebron, Barcelona, España. 2. Unidad de Cadera, Departamento de Cirugía Ortopédica y Traumatología, Hospital Universitario Vall d'Hebron, Barcelona, España; Universidad Autónoma de Barcelona, Hospital Universitario Vall d'Hebron, Barcelona, España. Electronic address: j.nuñez@vhebron.net. 3. Unidad de Cadera, Departamento de Cirugía Ortopédica y Traumatología, Hospital Universitario Vall d'Hebron, Barcelona, España; Universidad Autónoma de Barcelona, Hospital Universitario Vall d'Hebron, Barcelona, España.
Abstract
OBJECTIVE: To determine the incidence of dislocation after primary total hip arthroplasty using a posterior approach with repair of capsule and transosseous external rotators. MATERIAL AND METHOD: Historical cohort study between January 2009 and December 2015 of all the cases of dislocation of primary total hip arthroplasty operated using a posterior approach with repair of capsule and transosseous external rotators. Demographic and clinical data concerning the patient, surgery and dislocation were collected and analyzed. A descriptive analysis and a study of survival and risk function were performed by Kaplan Meier's method considering the appearance of a hip dislocation as the final event. RESULTS: The incidence of dislocation in our study was 1.2% (23 patients). In our study, the highest probability of dislocation occurred in the first 120 days. Forty-three point 5percent of the dislocated patients needed revision surgery. CONCLUSIONS: Capsular repair and transosseous reattachment of the external rotators can help to reduce the incidence of dislocation in patients undergoing primary total hip arthroplasty through a posterior approach.
OBJECTIVE: To determine the incidence of dislocation after primary total hip arthroplasty using a posterior approach with repair of capsule and transosseous external rotators. MATERIAL AND METHOD: Historical cohort study between January 2009 and December 2015 of all the cases of dislocation of primary total hip arthroplasty operated using a posterior approach with repair of capsule and transosseous external rotators. Demographic and clinical data concerning the patient, surgery and dislocation were collected and analyzed. A descriptive analysis and a study of survival and risk function were performed by Kaplan Meier's method considering the appearance of a hip dislocation as the final event. RESULTS: The incidence of dislocation in our study was 1.2% (23 patients). In our study, the highest probability of dislocation occurred in the first 120 days. Forty-three point 5percent of the dislocated patients needed revision surgery. CONCLUSIONS: Capsular repair and transosseous reattachment of the external rotators can help to reduce the incidence of dislocation in patients undergoing primary total hip arthroplasty through a posterior approach.
Keywords:
Abordaje posterior de cadera; Artroplastia total de cadera; Capsular repair; Dislocation; Luxación; Posterior hip approach; Reattachment of rotators; Reinserción de rotadores; Reparación capsular; Total hip arthroplasty