title: Results and performance after microfracture in National Basketball Association athletes.
abstract: BACKGROUND
  Microfracture technique is commonly used to treat symptomatic chondral lesions of the knee. Performance outcomes and attrition rates associated with this injury/surgery in National Basketball Association athletes are unclear.
  
  
  OBJECTIVE
  National Basketball Association players undergoing microfracture for symptomatic chondral lesions of the knee will have demonstrable differences in performance compared with preinjury and with matched controls.
  
  
  METHODS
  Case control study; Level of evidence, 3.
  
  
  METHODS
  We evaluated 24 National Basketball Association players who underwent microfracture between 1997 and 2006. Descriptive data and performance data for the first full season preceding and following the index surgery were collected. Data were obtained from 48 matched controls. Univariate/multivariate statistical methods were used to assess change in performance and return to play.
  
  
  RESULTS
  Thirty-three percent (8 of 24) of National Basketball Association athletes who underwent microfracture surgery never returned to play in the National Basketball Association. Fourteen players returned to play in the National Basketball Association for >1 season. Within-group comparisons revealed that points scored (P = .008) and minutes played (P = .045) were reduced postoperatively. No performance variables were significantly different when averaged over 40 minutes of play. When compared with controls, cases experienced a significant decline in points per game (P = .013). Multiple regression analysis revealed that cases were 8.15 times less likely to remain in the National Basketball Association than controls (P = .005) after the index year.
  
  
  CONCLUSIONS
  Players undergoing microfracture for knee chondral injuries are at risk for not returning to the National Basketball Association postoperatively. With the exception of points per game, athletes returning exhibited similar performance postoperatively compared with matched controls.
authors.affiliation: Department of Orthopaedic Surgery, University of Pennsylvania School of Medicine, 235 South 33rd Street, Philadelphia, PA 19104, USA.
authors.forename: Surena
authors.initials: S
authors.lastname: Namdari
authors.forename: Keith
authors.initials: K
authors.lastname: Baldwin
authors.forename: Okechukwu
authors.initials: O
authors.lastname: Anakwenze
authors.forename: Min-Jung
authors.initials: MJ
authors.lastname: Park
authors.forename: G Russell
authors.initials: GR
authors.lastname: Huffman
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Sennett
mesh_terms: D000328:Adult; D054544:Arthroplasty, Subchondral; D001182:Arthroscopy; D001490:Basketball / Q000293:injuries*; D015992:Body Mass Index; D002358:Cartilage, Articular / Q000293:injuries*; D006801:Humans; D007718:Knee Injuries / Q000601:surgery*; D008297:Male; D020127:Recovery of Function; D012038:Regeneration; D013647:Task Performance and Analysis; D055815:Young Adult