Radiological Riskfactors for Dislocation of Hip Hemiarthroplasty (RRDHHR)
Radiological Riskfactors for Dislocation of Hip Hemiarthroplasty Through a Posterolateral Approach as Treatment for Femoral Neck Fracture
Between January 1 2006 and December 31 2013, at our department 324 patients underwent hemiarthroplasty (HA) for displaced femoral-neck fracture with a bipolar prosthesis (Variokopf, Link®, Germany) by the use of the posteriolateral approach. Patients with pathological fractures and HA performed with direct lateral approach were excluded. A retrospective cohort study were conducted. Patients with prosthetic dislocation formed one group and patients without dislocation formed the control group.
As standard, post surgery radiographs (anteroposterior and lateral) were taken. After these were performed patient started weight bearing as soon as possible. Clinical data regarding patient demographics, details of the surgical procedure and the medical comorbidities were collected by the use of patient and operative records. Radiological analysis with position evaluation was performed using the post surgery radiographs by measuring Wiberg angle, inequality of leg length and femoral offset of the prostheses and compared with non-operated hip joint using the post surgery x-ray images.
Our hypothesis were that patients with single- or recurrent dislocations had shortened postoperative leg length, decreased femoral offsed and a Wiberg angle less than 25 degrees.
Descripción general del estudio
Estado
Condiciones
Tipo de estudio
Inscripción (Actual)
Contactos y Ubicaciones
Ubicaciones de estudio
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Västernorrlands län
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Sundsvall, Västernorrlands län, Suecia, 851 86
- Orthopaedic department, Sundsvall hospital
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Método de muestreo
Población de estudio
Descripción
Inclusion Criteria:
- Femoral neck fracture
- Treated with Hemiarthroplasty
- Through a posterolateral approach
Exclusion Criteria:
- Direct lateral approach
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
|---|
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Dislocation
Patients operated with hip hemiarthroplasty for a femoral neck fracture with a postoperative dislocation of the prosthesis
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Non-dislocated
Patents without dislocation of a hemiarthroplasty for a femoral neck fracture
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Femoral offset
Periodo de tiempo: 6 months up to 7 years
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The femoral offset is measured on the postoperative X-ray.
The result are compared between the groups of dislocated and non-dislocated patients.
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6 months up to 7 years
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Leg length difference
Periodo de tiempo: 6 months to 7 years
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Leg length difference is measured on the postoperative X-ray.
The result are compared between the groups of dislocated and non-dislocated patients.
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6 months to 7 years
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Wiberg angle
Periodo de tiempo: 6 months to 7 years
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Wiberg angle is measured on the postoperative X-ray.
The result are compared between the groups of dislocated and non-dislocated patients.
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6 months to 7 years
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Medidas de resultado secundarias
Medida de resultado |
Periodo de tiempo |
|---|---|
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1 year mortality
Periodo de tiempo: one year
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one year
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Arkan S Sayed-Noor, MD,PhD,FRCS, Orthopaedic department, Sundsvalls sjukhus, Landstinget Västernorrland
Publicaciones y enlaces útiles
Publicaciones Generales
- Madanat R, Makinen TJ, Ovaska MT, Soiva M, Vahlberg T, Haapala J. Dislocation of hip hemiarthroplasty following posterolateral surgical approach: a nested case-control study. Int Orthop. 2012 May;36(5):935-40. doi: 10.1007/s00264-011-1353-0. Epub 2011 Sep 20.
- Ninh CC, Sethi A, Hatahet M, Les C, Morandi M, Vaidya R. Hip dislocation after modular unipolar hemiarthroplasty. J Arthroplasty. 2009 Aug;24(5):768-74. doi: 10.1016/j.arth.2008.02.019. Epub 2008 Jun 13.
- Enocson A, Pettersson H, Ponzer S, Tornkvist H, Dalen N, Tidermark J. Quality of life after dislocation of hip arthroplasty: a prospective cohort study on 319 patients with femoral neck fractures with a one-year follow-up. Qual Life Res. 2009 Nov;18(9):1177-84. doi: 10.1007/s11136-009-9531-x. Epub 2009 Aug 28.
- Mukka S, Lindqvist J, Peyda S, Broden C, Mahmood S, Hassany H, Sayed-Noor A. Dislocation of bipolar hip hemiarthroplasty through a postero-lateral approach for femoral neck fractures: A cohort study. Int Orthop. 2015 Jul;39(7):1277-82. doi: 10.1007/s00264-014-2642-1. Epub 2015 Jan 6.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- SMASN
- SM
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