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Objective   To determine whether there are differences by sport or competitive level in symptomatic knee cartilage defects among recreational, high school, or collegiate competitive athletes undergoing initial arthroscopic knee surgery who meet criteria for cartilage restoration surgery.Design   Three hundred recreational ( n = 172) and high school or collegiate competitive athletes ( n = 128) younger than 40 years and body mass index (BMI) &lt;35 kg/m 2  (63% male, mean age 24.3 years, SD 7.1; mean BMI 25.7 kg/m 2 , SD 3.7) with Outerbridge grade 2 or higher symptomatic cartilage defects who underwent arthroscopic knee surgery were identified. The independent relationship between sporting activity or competitive level and cartilage defect location, size, severity, and symptom chronicity were assessed by multivariate regression analysis.Results   Full-thickness defects were present in 24% of competitive athletes and 31% of recreational athletes ( P = 0.21). There was a trend toward an independent association with competitive level and high-grade (3 or 4) multicompartment disease (adjusted odds ratio [aOR] 3.99, 95% confidence interval 0.84-18.8; P = 0.08) or isolated anterior compartment defects (aOR 2.00, 95% CI 0.86-4.62, P = 0.10) but not isolated medial or lateral defects. High-grade defect size was similar among recreational and competitive athletes ( P = 0.71). High-grade lateral defect prevalence differed by sport (running 24%, basketball 23%, soccer 18%, football 5%; P = 0.02) but not medial or anterior defect prevalence.Conclusions   Among recreational and high school or collegiate competitive athletes with symptomatic cartilage defects who meet criteria for cartilage restoration, competitive athletes may have higher risk of high-grade anterior and multicompartment defects but no difference in defect size.

cartilage

Knee Cartilage Defect Characteristics Vary among Symptomatic Recreational and Competitive Scholastic Athletes Eligible for Cartilage Restoration Surgery