Êtes-vous un étudiant de l'EPFL à la recherche d'un projet de semestre?
Travaillez avec nous sur des projets en science des données et en visualisation, et déployez votre projet sous forme d'application sur GraphSearch.
Concept
Opération Tommy John
Résumé
Ulnar collateral ligament reconstruction, colloquially known as Tommy John surgery (TJS), is a surgical graft procedure where the ulnar collateral ligament in the medial elbow is replaced with either a tendon from elsewhere in the patient's body, or with one from a deceased donor. The procedure is common among collegiate and professional athletes in several sports, particularly in baseball.
The procedure was devised in 1974 by orthopedic surgeon Frank Jobe, a Los Angeles Dodgers team physician who served as a special advisor to the team until his death in 2014. It is named after the first baseball player to undergo the surgery, major league pitcher Tommy John, whose record of 288 career victories ranks seventh among left-handed pitchers. The initial operation, John's successful post-surgery career, and the relationship between the two men was the subject of a 2013 ESPN 30 for 30 documentary.
The ulnar collateral ligament (UCL) can become stretched, frayed, or torn through the repetitive stress of the throwing motion. The risk of injury to the UCL is believed to be extremely high, as the amount of stress through the structure approaches its ultimate tensile strength during a hard throw.
This injury is associated with baseball, although it sometimes appears in other sports. Compared to athletes who play other sports, baseball players are at elevated risk of overuse injuries and injuries caused by early sports specialization among children and teenagers.
The results of a 2002 study suggest that the total number of pitches thrown is the greatest determinant. The study examined the throwing volume, pitch type and throwing mechanics of 426 pitchers aged nine to fourteen for one year. Compared to pitchers who threw 200 or fewer pitches in a season, those who threw 201–400, 401–600, 601–800, and 800+ pitches faced an increased risk of 63%, 181%, 234%, and 161% respectively. The types of pitches thrown showed a smaller effect; throwing a slider was associated with an 86% increased chance of elbow injury while throwing a curveball was associated with an increase in pain.
Source officielle
À propos de ce résultat
Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.