title: Results of uncemented distal locked prosthesis in revision hip arthroplasty with proximal femoral bone loss: A retrospective study.
abstract: BACKGROUND
  Management of bone loss is a challenge in revision total hip arthroplasty (THA). A retrospective review was performed to study the use of uncemented distal locked prosthesis in cases with proximal femoral bone loss.
  
  
  METHODS
  Uncemented stems with distal interlocking were used in 65 hips during revision THAs with 38 hips having Paprosky IIIB/IV defects between January 1998 and February 2004. There were 48 males and 17 females in the study with an average age of 53 years (range 30-80 years). Radiographic and clinical outcome evaluation using the Harris hip score (HHS) were performed.
  
  
  RESULTS
  AN IMPROVEMENT IN HHS (MEAN: 33 points) was observed at final followup (mean: 9 years). Regeneration of proximal bone stock was observed without signs of loosening or subsidence and none of the stems were revised. Three patients developed recurrent dislocation while one had a stem subsidence of 1cm following removal of interlocking bolts.
  
  
  CONCLUSIONS
  Uncemented distal locked prosthesis provide adequate stability in revision THA, aiding the reconstruction of bony deficiencies while avoiding the disadvantages of fully porous or cemented implants.
authors.affiliation: Department of Orthopaedics and Traumatology and Chief of Surgery, P D Hinduja National Hospital and Medical Research Centre, Mumbai, India.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Agarwala
authors.forename: Hari Ram
authors.initials: HR
authors.lastname: Jhunjhunwala
authors.forename: Jawahir A
authors.initials: JA
authors.lastname: Pachore
authors.forename: Siddharth B
authors.initials: SB
authors.lastname: Joglekar
authors.forename: Krishna Kiran
authors.initials: KK
authors.lastname: Eachempati
keywords: Distal locked prosthesis; femoral bone loss; revision hip arthroplasty; uncemented revision total hip arthroplasty