Patrick Mahomes’ Knee Injury More Severe Than First Reported After Surgery, Sources Say

The Kansas City Chiefs’ 2025 season ended not with a triumphant march toward the playoffs but with heartbreak, uncertainty, and a sudden shift in the franchise’s trajectory. The Chiefs, perennial contenders and recent dynastic power, were eliminated from postseason contention following a narrow 16-13 loss to the Los Angeles Chargers. Yet, the biggest story wasn’t the scoreboard—it was the health of superstar quarterback Patrick Mahomes, whose season-ending knee injury proved to be more severe than first imagined.

On Monday, Mahomes underwent surgery to repair what was initially reported as a torn left ACL. However, subsequent reports from NFL Network revealed that Mahomes also tore his LCL, complicating his recovery and raising new questions about his future and the Chiefs’ prospects. While the team maintains optimism about his timeline, the injury marks a bitter end to a roller-coaster season and forces Kansas City to confront the realities of roster construction, leadership, and the durability of dynasties in the NFL.

This article explores the details of Mahomes’ injury, the implications for his recovery, the impact on the Chiefs’ roster and culture, and the broader context of what this means for one of football’s most celebrated franchises.

The Injury: More Than Just the ACL

Initial Reports and Monday’s Surgery

When Patrick Mahomes went down in the fourth quarter against the Chargers, the Chiefs and their fans feared the worst. The diagnosis—a torn ACL in his left knee—was confirmed soon after, and the team announced that Mahomes would undergo surgery to repair the ligament. However, as details emerged following Monday’s procedure in Dallas by renowned surgeon Dr. Dan Cooper, it became clear that Mahomes’ injury was more complex than initially reported.

According to NFL Network, Mahomes also tore his LCL (lateral collateral ligament), a separate structure in the knee that provides stability and is crucial for lateral movement. The revelation added a new layer of concern to Mahomes’ recovery, as multiple ligament injuries can complicate surgical repair and rehabilitation.

What Are the ACL and LCL?

The ACL (anterior cruciate ligament) is one of the main stabilizing ligaments in the knee, responsible for preventing the tibia from sliding too far forward and allowing for quick changes in direction. The LCL, on the other hand, stabilizes the outer side of the knee and protects against forces that push the knee outward. Tearing both ligaments in a single incident is rare and typically results from significant trauma—often a twisting motion or direct blow.

For a quarterback like Mahomes, whose game relies on mobility, improvisation, and the ability to escape pressure, the health of these ligaments is paramount.

The Chiefs’ Response: Transparency and Urgency

Team Announcements and Andy Reid’s Comments

The Chiefs announced Mahomes’ surgery promptly, emphasizing the urgency to begin his recovery process. Notably, the team’s statement did not mention the LCL tear, leading reporters to press head coach Andy Reid for more information. Reid responded with characteristic candor: “It’s just what they put out there. We try not to hide too much from you, right? It’s not our game. I try to keep it right up front with you, so that’s the information that they had and they put it out for you.”

Reid’s comments reflected both transparency and the desire to protect Mahomes’ privacy, but they also underscored the gravity of the situation. The decision to proceed with immediate surgery, rather than seek further opinions or delay the process, suggests a commitment to getting Mahomes back on the field as quickly—and safely—as possible.

Why Immediate Surgery?

In cases of multi-ligament knee injuries, timing is critical. Early surgical intervention can reduce the risk of further damage, minimize swelling, and set the stage for a structured rehabilitation program. By acting swiftly, the Chiefs and Mahomes signal their intention to prioritize recovery and avoid lingering complications.

The Recovery Timeline: Nine Months and Counting

Complicating Factors and Optimism

Tearing both the ACL and LCL complicates recovery, as each ligament requires careful reconstruction and rehabilitation. However, NFL Network’s report indicated that this does not necessarily mean Mahomes’ rehab will extend beyond the typical nine-month window. Advances in surgical techniques, physical therapy, and sports medicine have made it possible for elite athletes to return from complex knee injuries within a year, though the process is demanding.

Andy Reid remains optimistic: “I know the process of rehab and for sure he’ll get in there, and I know he’ll come out on the strong end of this thing.” Reid’s confidence in Mahomes’ work ethic and the team’s medical staff is well-placed—Mahomes has overcome adversity before and is known for his relentless commitment to improvement.

What Does Rehab Look Like?

Rehabilitation from ACL and LCL surgery involves several stages:

1. Immediate Post-Surgery: Focus on reducing swelling, regaining range of motion, and protecting the repaired ligaments.
2. Strengthening: Gradual reintroduction of weight-bearing activities, muscle strengthening, and balance exercises.
3. Functional Training: Sport-specific drills, agility work, and movement patterns tailored to Mahomes’ role as a quarterback.
4. Return to Play: Clearance from medical staff, psychological readiness, and incremental return to practice and competition.

Throughout the process, Mahomes will be monitored closely, with adjustments made based on his progress and any setbacks.

The Impact on the Chiefs: End of a Dynasty?

Playoff Elimination and Roster Evaluation

The Chiefs’ loss to the Chargers, coupled with Mahomes’ injury, marked the end of their playoff hopes for the first time since 2014. The team’s run of three straight Super Bowl appearances, including two championships, is a testament to their excellence—but the current moment feels like a turning point.

With Mahomes sidelined, backup Gardner Minshew took over but was unable to lead the offense into field goal range for a potential overtime-forcing score. The defeat sealed the Chiefs’ fate and forced an immediate shift in focus from postseason aspirations to roster evaluation and future planning.

Evaluating the Roster: Who Steps Up?

Over the final three games of the season, the Chiefs will give young players opportunities to prove themselves. Minshew will start at quarterback, and the coaching staff will assess depth at key positions. The goal is to identify contributors who can help the team remain competitive while Mahomes recovers.

Andy Reid acknowledged the importance of this process: “Some of the young guys are having opportunities to play, we’re going to finish this season strong and with effort.”

The Bigger Picture: Dynasties, Injuries, and NFL Evolution

The Fragility of Success

The Chiefs’ sudden fall from grace is a reminder of the fragility of success in the NFL. Injuries, roster turnover, and the relentless march of time can derail even the most dominant teams. The Patriots, often cited as the gold standard of dynasties, endured their own setbacks—including Tom Brady’s ACL tear in his ninth season—yet found ways to rebound and remain competitive.

For Kansas City, the challenge is clear: adapt, evolve, and refuse to accept mediocrity. The window for contention remains open as long as Mahomes is healthy and motivated, but the team must address weaknesses exposed by the season.

Roster Construction: Lessons Learned

The Chiefs’ reliance on Mahomes to mask roster deficiencies has reached its limit. The offensive line struggled to protect him, the running game was inconsistent, and the receiving corps lacked a true number one target. The defense, while talented, failed to consistently pressure opposing quarterbacks and allowed too many big plays.

The offseason will be critical. Kansas City must invest in talent at key positions, embrace accountability, and foster a culture of resilience. The salary cap will pose challenges, but creative management and smart drafting can help the team reload rather than rebuild.

Mahomes’ Legacy: Resilience in the Face of Adversity

Leadership and Determination

Patrick Mahomes’ response to adversity has always been marked by humility and determination. His tweet after the injury—“Thank you, Chief’s Kingdom, for always supporting me. For everyone who’s reached out and sent prayers, I’ll be back stronger than ever”—captures the spirit that has made him a leader on and off the field.

Mahomes’ commitment to rehab, his willingness to embrace the grind, and his leadership in the locker room will be essential as the Chiefs navigate a challenging offseason. His ability to return from injury will define not only his own legacy but the future of the franchise.

Psychological Recovery

Physical rehabilitation is only part of the journey. Major injuries bring psychological challenges—doubt, anxiety, and the fear of re-injury. Mahomes’ support system, including family, teammates, and coaches, will play a vital role in helping him maintain a positive mindset and stay focused on his goals.

The Road Ahead: Questions and Opportunities

Will Mahomes Be Ready for 2026?

The nine-month timeline puts Mahomes on track to return for the start of the 2026 season, though the complexity of his injury means caution is warranted. The Chiefs will prioritize his long-term health, balancing the desire for a quick comeback with the need for full recovery.

Can the Chiefs Reload?

The end of the dynasty narrative is premature. While the current season marks a bitter end, the Chiefs have the leadership, culture, and resources to remain contenders. The offseason will be a test of their ability to adapt, invest in talent, and support their star quarterback.

What Will Change?

Expect the Chiefs to make moves at key positions—offensive line, running back, wide receiver, and defense. The team must address weaknesses and build a roster capable of competing at the highest level, with or without Mahomes.

Conclusion: A Turning Point, Not an End

Patrick Mahomes’ knee injury is worse than initially thought, but it is not the end of his career or the Chiefs’ dynasty. The road to recovery will be long and challenging, but advances in medicine, Mahomes’ work ethic, and the Chiefs’ commitment to excellence offer hope for a triumphant return.

This moment is a turning point—a chance for Kansas City to reflect, regroup, and recommit to the values that made them champions. The offseason will be critical, but the dynasty can endure if the team embraces change and supports its leader.

As the NFL landscape shifts and new contenders emerge, all eyes will be on Mahomes and the Chiefs. Their response to adversity will define not only the next chapter of their story but the future of football itself.