title: Can prosthesis design of total knee arthroplasty affect balance?
abstract: OBJECTIVE
  In this study, we aimed to investigate whether posterior cruciate ligament (PCL) retaining or substituting in total knee arthroplasty affect the balance.
  
  
  METHODS
  Between March 2010 and April 2014, a total of 41 patients who underwent total knee arthroplasty in our clinic were included in the study. A PCL-substitution prosthesis was used in 21 patients (group 1) and a PCL-retaining prosthesis was used in 20 patients (group 2). Balance and fall risk were evaluated using a balance assessment device. The patients were examined by the Berg Functional Balance Scale.
  
  
  RESULTS
  The mean follow-up was 25.6±9.7 months. There was no statistically significant difference in static or dynamic overall stability, mediolateral stability or fall risk between the two types of prostheses. A significant difference in the dynamic anteroposterior stability index scores was observed between the groups.
  
  
  CONCLUSIONS
  Our study results show that PCL-substitution prosthesis affects the balance positively in total knee arthroplasty. Therefore, PCL-substitution prosthesis design should be considered for patients who have risk factors for balance disorder, in particular.
authors.affiliation: Department of Orthopedics and Traumatology, Medical Faculty of Medipol University, 34214 Bağcılar, İstanbul, Turkey. misyar2003@yahoo.com.
authors.forename: Mehmet
authors.initials: M
authors.lastname: İsyar
authors.forename: İlknur
authors.initials: İ
authors.lastname: Saral
authors.forename: Olcay
authors.initials: O
authors.lastname: Güler
authors.forename: Engin
authors.initials: E
authors.lastname: Çakar
authors.forename: Mahir
authors.initials: M
authors.lastname: Mahiroğullari
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D016119:Posterior Cruciate Ligament / Q000601:surgery*; D004856:Postural Balance; D011474:Prosthesis Design