The ACL surgery
On Monday, 15 December, Patrick Mahomes underwent surgery to reconstruct his torn left cruciate ligament in Dallas, Texas.
The season-ending ACL tear is a major blow that effectively ended the Chiefs’ playoff hopes for the 2025 season. Mahomes successfully underwent surgery performed by Dr. Dan Cooper in Dallas and is facing a typical recovery timeline of 9 to 10 months, which places his potential return around the start of the 2026 NFL season. His rehabilitation process will be a closely watched case study for ACL recovery in elite, highly mobile quarterbacks.
The initial injury to Patrick Mahomes’ left knee was immediately season-ending, but the surgical repair marked the crucial first step on his long road to recovery. The Chiefs organization ensured their star quarterback received care from one of the most trusted names in orthopedic surgery. The surgery was performed shortly after the injury—specifically, on the evening of Sunday, December 14, 2025. The procedure took place in Dallas, Texas. The operation was successfully carried out by Dr. Dan Cooper, the head team physician for the Dallas Cowboys and a renowned orthopedic surgeon specializing in knee injuries. Dr. Cooper is highly respected for his work on elite athletes. The primary focus of the surgery was the repair of the Anterior Cruciate Ligament (ACL) in Mahomes’ left knee. Public reports also indicated an accompanying tear to the Lateral Collateral Ligament (LCL), meaning the procedure involved a complex, multi-ligament reconstruction.