Most athletes would not have come this far without extraordinary perseverance and determination, and elite CrossFit athlete Sara Sigmundsdóttir is no exception.
“People often tell me, ‘You were so intense, I didn’t dare to speak to you in the warm-up area,’” said Sara. “That’s when the switch flips. I don’t see anything except what I’m about to do.”
This mindset defined her career. Known worldwide for her podium finishes at the CrossFit Games and her relentless competitive drive, Sara built her reputation on focus and resilience. Yet even for an athlete used to overcoming challenges, the next phase of her journey would test her in entirely new ways. What ultimately helped her move forward wasn’t another surgery but a holistic approach to healing including the Arthrex ACP® therapy.
Pain had always been part of Sara’s athletic reality, often at a level that seemed unimaginable from the outside. Over the years, she competed through injuries that would sideline most athletes, including broken ribs and severe knee trauma.
“I’ve done some insane things through injuries,” said Sara. “I once rode a full marathon with a broken rib, which is probably the worst pain I’ve ever experienced in my life. But when you really want something, you learn to shut out the noise and go for it.”
Years of pushing through pain, however, came at a cost. Despite strict adherence to rehabilitation protocols, adjustments to her training, and a range of medical treatments, she struggled with persistent inflammation and recurring setbacks that no longer responded to discipline alone.
“High-level athletic activity places major stress on the joints, particularly after previous injury or surgery,” explained Dr. Emmanouil Papakostas (Doha, Qatar). “Sara was facing a particularly challenging situation: competing at an elite level in a highly demanding sport while dealing with chronic inflammation and post-traumatic joint degeneration.”
At one point, Sara was told she might never return to competition and that even everyday activities could become limited over time.
“It was July 5, 2024, I remember that day very clearly,” said Sara. “The doctor told me I might struggle to even play with my future kids. That really hit me. I thought my career was over. But at the same time, I knew there had to be another way. The switch flipped again. You don’t tell a Scandinavian woman she can’t do something.”
Rather than accepting that prognosis, Sara took a step back to reassess. A key shift came when she decided to move away from long-term reliance on anti-inflammatory and immunosuppressive medications. Instead, she focused on nutrition, gut health, and recovery strategies designed to support her body more holistically. During this process, Dr. Papakostas introduced her to Arthrex ACP® therapy, followed later by the ACP Max™ system.
“Sara’s main issue at that point was ongoing inflammation inside the joint, causing swelling, pain, and stiffness,” said Dr. Papakostas. “For an elite athlete, biologic treatments like ACP and ACP Max were a logical option. They aim to regulate the inflammatory response in a more natural, regenerative way, while avoiding additional immunosuppressive therapies. The goal is to restore normal joint and muscle function.”
Over time, these changes began to have a noticeable effect. As inflammation decreased, Sara experienced improved mobility, reduced stiffness, and, perhaps most importantly, a renewed sense of trust in her body.
“All of a sudden, my knee felt lighter,” said Sara. “There was less restriction, less stiffness. I could drop into a squat without overthinking it.”
This perceived “lightness” reflects measurable physiological changes within the joint, particularly reduced inflammatory activity and improved joint mechanics, allowing movement to feel more natural again.1,2
“When athletes describe feeling ‘lighter,’ it usually indicates a healthier environment inside the joint,” Dr. Papakostas explained. “As inflammation and synovial irritation decrease, movement becomes more fluid and less restricted.”
With gradual progress, Sara was able to return to structured training. She carefully reintroduced running, jumping, and strength work, rebuilding her performance step by step.
“In more than two decades in professional sports, I can hardly recall an athlete with Sara’s level of commitment and body awareness,” said Dr. Papakostas. “What makes her journey remarkable is that she continued competing at the highest level despite very serious knee challenges along the way.”
Her comeback culminated in 2025 when she returned to competition and placed 15th worldwide in the CrossFit Open, an achievement that would have seemed out of reach just months earlier.
For Sara, however, success has never been defined solely by rankings. Her journey is about resilience, and about refusing to let setbacks dictate the outcome.
“I want people to remember me as someone who never gave up,” said Sara. “Someone who didn’t let outside voices decide when her story was over.”
Learn more about the ACP® therapy that supported Sara’s recovery journey at acp-therapy.com.