Gridiron Gastrocs: A 15-Year Review of NFL Achilles Tendon Injuries (2009–2024) Exploring Prevalence, Risk Factors, Management, and Return to Play

Research Type: Level 3 - Retrospective cohort study, Case-control study, Meta-analysis of Level 3 studies Introduction/Purpose: Achilles tendon injuries in professional football athletes have significant implications for both short-term performance and long-term career sustainability. Within the National Football League (NFL), explosive, high-impact movements like sprinting, cutting, and blocking place considerable stress on the gastrocnemius–soleus–Achilles tendon complex. When injured, athletes often face lengthy and uncertain recoveries. This study seeks to identify and analyze key factors influencing Achilles tendon strains, tears, and ruptures in NFL players by reviewing documented injuries across 15 years (2009–2024, in- and off-season). We aim to (1) delineate rates and risk factors associated with injury, (2) evaluate operative vs non-operative management trends, and (3) examine return-to-play (RTP) length. Our goal is to provide evidence-based recommendations that may enhance player safety and improve prognostic accuracy for clinicians and sports organizations. Methods: From 2009 to 2024, 117 Achilles injuries among NFL players were identified using the database ProSportsTransactions.com, NFL game logs, and media reports. A 2009 start date was chosen due to improved consistency in NFL injury reporting and documentation. For each injurious event, the following variables were recorded: type, age at injury, treatment, playing position, injury occasion and method, career season, number of same-season games played before injury, surface on which injury occurred, and total days between injury and RTP. 20 players who did not RTP (i.e., retirement) were excluded from ANOVA analysis. Descriptive statistics were used to summarize categorical and continuous variables. Differences in mean days to return were analyzed using t-tests for binary groupings and one-way ANOVA (or Kruskal–Wallis) for multi-level factors. Correlations with Pearson were performed to evaluate relationships among continuous variables. Statistical significance was set at p< 0.05. Analyses were performed using SPSS software. Results: The greatest proportion of Achilles injuries were tears (59.8%). Tear injuries had a significantly longer RTP than strains (p < 0.001), and were associated with less same-season games played prior to injury (p=0.035). Players who underwent non-operative treatment had a significantly faster RTP than those who underwent operative treatment (p < 0.001). While achilles injuries were most frequent in defensive players, RTP and treatment selection were similar within tear and strain subgroups. The distribution of the method of injury as well as field type remained consistent between tears and strains: approximately 3:1 ratio of non-contact vs contact injuries and equal numbers of injuries on grass vs synthetic turf were observed. Overall, the majority of Achilles injuries were sustained during in-season games (68.4%) as opposed to off-season (27.3%). Conclusion: Athletes who were injured with fewer games played (typically earlier in the season) were more prone to tear injuries as compared to strains, thus indicating that lack of prolonged continuous play may increase risk for rupture. Conversely, players engaging in multiple games are more likely to have strains likely due to overuse injuries. Although early-season tears may be terminal for an athlete's season, the earlier timeline may facilitate rapid operative treatment to maximize player recovery time prior to the next season. Clinical staff may consider additional precautions towards prevention of Achilles tears early in the NFL season.