Tendinopathy is a critical medical condition that often hinders level of participation for professional and young athletes in many sports. The purpose of the study was to describe the incidence and severity of tendinopathy in a multi-sport club with professional and youth teams. We performed a retrospective epidemiological study. Incidence of tendinopathy in players (n = 3839; 8-38 years, professional and youth) was reviewed over 8 seasons (2008-2016) in 5 team sports: football, basketball, handball, roller hockey, and futsal. Team physicians diagnosed and classified tendinopathies according to anatomical location, sport types, playing category, sex, playing surface, lost training time, and severity (time to return to play). Injuries were coded using OSICS-10, and incidence of tendinopathies were calculated as the number of injuries per 100 players per season. The total relative frequency of tendinopathy (versus total injuries) was 22% (843/3839) over 8 seasons from 360 in youth and 483 in professional teams. The incidence of injury was the highest in professional basketball [69.9, 95%CI: (58.0-81.4)] followed by professional roller hockey [64.4, 95%CI: (47.3-85.6)], and professional futsal [36.2, 95%CI: (27.3-47.1)]. The most incidences commonly affected tendons were the patellar [11.7, 95%CI: (10.0-13.5)] and Achilles [10.3, 95%CI: (8.5-12.5)]. Tendinopathies represent a significant number of injuries in team sports and are more common in professional than youth teams, especially basketball and roller hockey. Additional studies are needed to understand associated time-loss and impact on performance, and to develop prevention strategies for high risk sports. Key Points The incidence of higher in indoor sports especially in professional basketball followed by professional roller hockey, and professional futsal. The longest time to RTP were associated with tendinopathy of the adductor longus (probably related with groin pain pathology). Most common tendinopathies, patellar and Achilles, demonstrated considerable variability in their RTP time according to sport. Tendinopathies represent a significant number of injuries in team sports and are more common in professional than youth teams, especially basketball and roller hockey. 30% of all tendinopathies in professional players result in time loss.
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