Tommy John surgery is remarkably common in baseball and getting more so every year. The annual volume of the procedure surged 193% between 2002 and 2011, and nearly one-third of all surgeries performed over a 42-year tracking period took place in just the five years from 2011 to 2015. In professional baseball, more than one in three active major league pitchers (35.3%) had undergone the surgery as of 2023, a 29% increase since 2016.
How Common It Is in Professional Baseball
At the MLB level, Tommy John surgery has shifted from a rare, career-threatening event to something closer to a rite of passage for pitchers. The 35.3% figure from 2023 means that if you watch a game, roughly a third of the pitchers on both rosters have had their elbow ligament rebuilt at some point. The surgery’s population-adjusted rate tripled from 0.15 to 0.45 per 100,000 people between 2002 and 2011, and that growth has continued.
About half of all collegiate baseball programs have at least one player undergo the surgery each year. That number captures just the athletes who go through with reconstruction, not the larger pool dealing with elbow ligament damage that gets managed without an operation.
Teenagers Are the Fastest-Growing Group
The surgery is no longer concentrated among professionals. The fastest-growing rate of procedures is in athletes aged 15 to 19. Between 2007 and 2011, adolescents in that age range accounted for 79% of all recorded reconstructions, with the 20-to-24 group a distant second. A national epidemiological study found that nearly two-thirds of all elbow ligament injuries occurred in patients under 20, with a median age at first diagnosis of just 17 years.
The median age of patients actually going under the knife dropped from 20 to 18 between 2013 and 2015. Injuries spiked most sharply in 17-to-20-year-olds. The likely culprits are year-round play, early specialization in pitching, and an emphasis on throwing hard at younger ages. These athletes are putting professional-level stress on elbows that haven’t finished growing.
It’s Not Just a Baseball Problem
Baseball and softball account for the majority of elbow ligament injuries requiring surgery, but they’re far from the only sports involved. In one review of 136 ligament injuries at a single institution over 16 years, about 27% occurred during non-throwing activities, including gymnastics, cheerleading, mixed martial arts, and football. An NCAA surveillance study across 25 varsity sports found that 76% of elbow ligament injuries actually involved a contact, non-throwing mechanism, with wrestling and football responsible for most of those cases.
In the NFL, a review of acute elbow injuries over five seasons identified 19 ligament tears, and 17 of those happened in non-throwing players like linemen, receivers, and defensive backs. Gymnasts and cheerleaders also appear in surgical case series, though in much smaller numbers than baseball players.
Return-to-Play Rates After Surgery
The surgery has a strong track record for getting athletes back on the field, though “back on the field” and “back to the same level” are two different things. For MLB pitchers after a first-time reconstruction, roughly 96 to 97% return to pitching in some capacity. The more meaningful number is how many return to the major league level: that figure ranges from 79 to 83% across multiple studies, and it typically takes 15 to 18.5 months to get there. Some pitchers need as long as 49 months.
Position players have a different experience depending on where they play. Outfielders return to the MLB level about 74% of the time, infielders around 78%, and catchers only about 50%. Catchers face the toughest road because of the repetitive stress that receiving and throwing puts on the repaired elbow. Among established pitchers who were already logging significant playing time before surgery, only 66% made it back to their previous level of performance.
Revision surgery, needed when a first reconstruction fails, brings the return rate down further, with 55 to 78% of MLB pitchers getting back to their prior level.
A Newer Option: Repair With Internal Brace
Traditional Tommy John surgery replaces the damaged ligament with a tendon graft from elsewhere in the body. A newer approach repairs the existing ligament and reinforces it with an internal brace, a synthetic tape that supports the healing tissue. This option works for tears at one end of the ligament rather than complete mid-substance damage.
In a study comparing the two procedures in competitive athletes, 98% of those who had the repair with internal brace returned to their sport, compared to 99% in the traditional reconstruction group. The repair’s appeal is a potentially shorter recovery timeline, though both approaches produce high return-to-sport numbers overall.
Why the Numbers Keep Climbing
The rise in surgery rates traces back to how young athletes train. Year-round baseball, showcase tournaments, and early velocity development put cumulative stress on the elbow’s inner ligament long before it’s fully mature. Pitch count guidelines exist specifically to slow this trend. USA Baseball’s recommendations, established in 2006, set age-based limits on pitches per game and mandatory rest days. Research from Japan found that capping young pitchers at 70 or fewer pitches per day was more protective against elbow pain than simply limiting innings.
Compliance with pitch count limits appears to reduce the likelihood of eventually needing surgery. But enforcement is inconsistent, especially in travel ball and showcase settings outside organized league play. The combination of more kids throwing harder, training year-round, and specializing in pitching earlier continues to push surgery numbers upward, particularly in the 15-to-19 age group where the growth rate is steepest.
The Financial Cost
For professional teams, the expense goes far beyond the operating room. A cost analysis of MLB found that the total recovery cost for Tommy John surgery amounted to $395 million across the players studied, averaging $1.9 million per player in lost productivity and salary paid during rehabilitation. Starting pitchers drove the largest share at $239.6 million total, while closers represented the biggest per-player loss at $3.9 million each. For non-professional athletes, the surgery, rehabilitation, and time away from school or work carry their own significant costs, though these are less formally tracked.