title: Interactions between severity and location of chondral lesions and meniscal tears found at arthroscopy.
abstract: OBJECTIVE
  This study reports the specific interactions between the different grades and locations of chondral lesions found in symptomatic knees requiring arthroscopy. The associations between meniscal tears and chondral lesions were also investigated.
  
  
  METHODS
  Data were analysed for 141 knee arthroscopies (87 males and 54 females), with a mean patient age of 45.9 years. Chondral lesions were defined according to the modified Outerbridge classification system by a single surgeon immediately following arthroscopic surgery.
  
  
  RESULTS
  The most common clinical findings were medial meniscal tears (47%) and medial femoral condyle lesions (57%). Compared to other locations within the knee, the medial femoral condyle was the most commonly affected location for a chondral lesion and 75% of these lesions were graded as III (32%) or IV (43%). Similarly, 77% of knees with a trochlea lesion were affected by high-grade chondral lesions (grade III = 12%; grade IV = 65%). The trochlea presented with the greatest percentage of grade IV chondral lesions. Eighty percent of patients with a meniscal tear also had a chondral lesion. Medial meniscal tears were most commonly observed with medial femoral condyle lesion. Lateral meniscal tears were most commonly observed with lateral tibial plateau lesions. Twenty-nine percent of patients had corresponding lesions on the medial femoral condyle and medial tibial plateau, and this was the most commonly found interaction between chondral lesion locations.
  
  
  CONCLUSIONS
  Patients with medial meniscal tears are likely to also have a chondral lesion on the same side of the knee.
  
  
  METHODS
  II.
authors.affiliation: North East Orthopaedic and Sports Injury Research Group, Tyne and Wear, UK.
authors.forename: S
authors.initials: S
authors.lastname: Jones
authors.forename: N
authors.initials: N
authors.lastname: Caplan
authors.forename: A
authors.initials: A
authors.lastname: St Clair Gibson
authors.forename: N
authors.initials: N
authors.lastname: Kader
authors.forename: D
authors.initials: D
authors.lastname: Kader
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001182:Arthroscopy; D002356:Cartilage / Q000473:pathology; D005260:Female; D005269:Femur / Q000473:pathology; D006801:Humans; D007718:Knee Injuries / Q000473:pathology*; D007719:Knee Joint / Q000473:pathology; D008297:Male; D008592:Menisci, Tibial / Q000473:pathology; D008875:Middle Aged; D010329:Patella / Q000473:pathology; D012189:Retrospective Studies; D013977:Tibia / Q000473:pathology; D000070600:Tibial Meniscus Injuries; D055815:Young Adult