title: Magnetic resonance imaging of the knee in asymptomatic professional basketball players.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the prevalence of articular cartilage lesions and meniscal tears on magnetic resonance imaging (MRI) scans in the knees of asymptomatic male professional basketball players.
  
  
  METHODS
  A retrospective review.
  
  
  METHODS
  Twenty players (40 knees) met the inclusion criteria of being signed by a National Basketball Association team and passing their preseason physical examination. All included athletes were assessed for the presence of articular cartilage lesions, meniscal pathology, and the presence of effusions.
  
  
  RESULTS
  The overall prevalence of articular cartilage lesions on MRI was 47.5% in our study group. There were trochlear groove articular lesions in 25%. The lateral femoral condyle was involved in 2.5% of all knees. The medial femoral condyle was affected in 10% of all knees. The lateral tibial plateau showed articular cartilage lesions in 5%. The patella had articular cartilage lesions in 35%. The overall prevalence of various grade meniscal lesions was 20% on MRI. Medial intra-meniscal signals accounted for 87.5% and 12.5% on the lateral side.
  
  
  CONCLUSIONS
  The results of our study show an equal to or higher prevalence of meniscal lesions in male professional basketball players than previously reported in the literature. We found a large number of patella-femoral articular cartilage lesions in our study population of male professional basketball players. These athletes perform at the highest demand level, which indicates that the presence of these lesions did not cause any symptoms.
  
  
  METHODS
  Level IV, case series.
authors.affiliation: Department of Orthopaedics and Rehabilitation, University of Wisconsin, Milwaukee, Wisconsin, USA.
authors.forename: Lee D
authors.initials: LD
authors.lastname: Kaplan
authors.forename: Matthias R
authors.initials: MR
authors.lastname: Schurhoff
authors.forename: Harlan
authors.initials: H
authors.lastname: Selesnick
authors.forename: Michael
authors.initials: M
authors.lastname: Thorpe
authors.forename: John W
authors.initials: JW
authors.lastname: Uribe
mesh_terms: D001265:Athletic Injuries / Q000175:diagnosis*; D001484:Baseball; D002358:Cartilage, Articular / Q000473:pathology*; D006801:Humans; D007718:Knee Injuries / Q000473:pathology; D007719:Knee Joint / Q000033:anatomy & histology* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008592:Menisci, Tibial / Q000473:pathology; D012189:Retrospective Studies; D013977:Tibia / Q000473:pathology; D000070600:Tibial Meniscus Injuries