title: RELATIONSHIP BETWEEN PATELLAR HEIGHT AND RANGE OF MOTION AFTER TOTAL KNEE ARTHROPLASTY.
abstract: To evaluate whether, after total knee arthroplasty, there is any correlation between patellar height and range of motion (ROM) achieved by patients six months after the operation.
  
  
  METHODS
  Forty-five patients who underwent total knee arthroplasty were assessed at least 12 months after the operation (total of 54 knees). The maximum and minimum ROM of all the knees was recorded under fluoroscopy, along with patellar height according to the Blackburne and Peel ratio. Two possible correlations were evaluated: patellar height and ROM; and patellar height and ROM variation from before to after the operation.
  
  
  RESULTS
  A correlation was found between patellar height and postoperative ROM (p = 0.04). There was no correlation between patellar height and ROM variation (p = 0.182).
  
  
  CONCLUSIONS
  After total knee arthroplasty, the lower the patella is, the worse the ROM is.
authors.affiliation: PhD from UNIFESP. Orthopedist at Hospital Madre Teresa, and Professor in the Department of the Locomotor System, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
authors.forename: Lúcio Honório de Carvalho
authors.initials: LH
authors.lastname: Júnior
authors.affiliation: Orthopedist at Hospital Madre Teresa, Belo Horizonte, MG, Brazil.
authors.forename: Luiz Fernando Machado
authors.initials: LF
authors.lastname: Soares
authors.affiliation: Orthopedist at Hospital Madre Teresa, Belo Horizonte, MG, Brazil.
authors.forename: Matheus Braga Jacques
authors.initials: MB
authors.lastname: Gonçalves
authors.affiliation: Resident Physician at Hospital Madre Teresa, Belo Horizonte, MG, Brazil.
authors.forename: Marcelo Lobo
authors.initials: ML
authors.lastname: Pereira
authors.affiliation: Resident Physician at Hospital Madre Teresa, Belo Horizonte, MG, Brazil.
authors.forename: Rodrigo Rosa
authors.initials: RR
authors.lastname: Lessa
authors.affiliation: Resident Physician at Hospital Madre Teresa, Belo Horizonte, MG, Brazil.
authors.forename: Lincoln Paiva
authors.initials: LP
authors.lastname: Costa
keywords: Arthroplasty Replacement Knee; Articular; Patella; Range of Motion