title: Revision of failed hip hemiarthroplasty. Classification, management, and follow-up.
abstract: BACKGROUND
  Many types of failed hemiarthroplasties have been reported, but there is no classification of these failures.
  
  
  METHODS
  Revisions of 217 cases of failed hemiarthroplasty were studied with an average follow-up of 6.2 years. Classification system based on site of problem, mode of failure, and type of revision, was introduced.
  
  
  RESULTS
  In most cases, the intra-operative assessment of failure correlated with the preoperative classification (99%). At the last follow-up, there were 15/217 re-revisions; giving a success rate of 93%.
  
  
  CONCLUSIONS
  This classification helps in choosing the appropriate revision method, leading to acceptable results.
authors.affiliation: Department of Orthopedic Surgery, Faculty of Medicine, Menoufia University, Shebeen El-Kom, Menofia Governorate 32721, Egypt.
authors.forename: Elsayed
authors.initials: E
authors.lastname: Morsi
authors.affiliation: Department of Orthopedic Surgery, Faculty of Medicine, Menoufia University, Shebeen El-Kom, Menofia Governorate 32721, Egypt.
authors.forename: Mohamed Elsawy
authors.initials: ME
authors.lastname: Habib
authors.affiliation: Department of Orthopedic Surgery, Faculty of Medicine, Menoufia University, Shebeen El-Kom, Menofia Governorate 32721, Egypt.
authors.forename: Adel
authors.initials: A
authors.lastname: Elseedy
authors.affiliation: Department of Orthopedic Surgery, Faculty of Medicine, Menoufia University, Shebeen El-Kom, Menofia Governorate 32721, Egypt.
authors.forename: Taher
authors.initials: T
authors.lastname: Eid
keywords: Classification; Failure; Hemiarthroplasty; Hip; Revision