title: [Usefulness of HA+beta-TCP in bone defects repair during revision hip and knee arthroplasty].
abstract: BACKGROUND
  Bone deficiency can present a surgical challenge during revision total hip and knee arthroplasty. The amount of bone grafts available for surgical purposes is insufficient. Synthetic bone substitutes can eliminate the risk of infection transmission. The purpose of the present study was to evaluate the clinical and radiographic outcomes of revision hip and knee arthroplasty with use of an impaction bone-grafting with HA+beta-TCP in reconstruction of bone defects.
  
  
  METHODS
  20 total hip revision (THR) and 10 total knee revision (TKR) were performed in 30 patients where impaction bone-grafting technique with HA+beta-TCP was used. Clinical, radiographic and CT results were assessed. Mean follow-up was 21 (11-48) months for THR and 22 (10-46) months.
  
  
  RESULTS
  Loosening was seen in 2 cups. In one case the reoperation was performed. In the second due to massive bone loss the prosthesis was removed. No another acetabular and stem components required revision surgery. There were no knee implant migration or loosening observed. The mean total HSS score was 45.3 preoperatively and 71.5 postoperatively. The mean CRS score was 35.7 preoperatively and 73.4 postoperatively.
  
  
  CONCLUSIONS
  The use of HA+beta-TCP with bone grafts impaction is a good method of bone defect reconstruction and can provide good short-term clinical results in revision hip and knee arthroplasty.
authors.affiliation: Klinika Ortopedii i Chorób Zapalnych Narzadu Ruchu, Centrum Medyczne Kształcenia Podyplomowego im. prof. Adama Grucy w Otwocku. jackow@o2.pl
authors.forename: Jacek B
authors.initials: JB
authors.lastname: Kowalczewski
authors.forename: Marcin
authors.initials: M
authors.lastname: Milecki
authors.forename: Aleksander
authors.initials: A
authors.lastname: Wielopolski
authors.forename: Anna
authors.initials: A
authors.lastname: Slósarczyk
authors.forename: Dariusz
authors.initials: D
authors.lastname: Marczak
authors.forename: Tomasz
authors.initials: T
authors.lastname: Okoń
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D001672:Biocompatible Materials / Q000627:therapeutic use*; D002130:Calcium Phosphates / Q000627:therapeutic use*; D002516:Ceramics / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged
chemical_list: D001672:Biocompatible Materials; D002130:Calcium Phosphates; C485817:beta-tricalcium phosphate