MACI Stories - Kayla Skip to content

“My MACI procedure had a positive impact on my ability to participate in daily activities. I can now spend long hours on my feet at work with confidence and I'm back to enjoying the activities I love.”

Kayla’s always been on the go. From playing competitive soccer in her youth to working as an ER nurse, she’s lived a fast-paced active life. But when knee cartilage damage was preventing her from caring for her patients and enjoying the activities she loved, Kayla decided it was time to take action and care for herself.

After researching her treatment options with the help of her doctor, they decided to move ahead with MACI, a procedure that would use Kayla’s own cells to repair her damaged knee cartilage and provide long-term* results. After her MACI procedure, Kayla’s back to living an active life and working 12-hour shifts in the ER. And she couldn’t be happier.

See more of Kayla’s comeback story and why she believes MACI rehab was worth it.

Individual results may vary.

*Improvements at 2 years, maintained at 5 years.

Kayla’s Story

On finding relief through MACI

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Caring for Herself So She Can Care for Others

Kayla got back to the job she loves with the help of MACI

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“Thanks to MACI, I am close to being back in the best shape of my life and each day I’m getting stronger and feeling better.”

Motivation has never been an issue for Chris. Deployed in the Air Force, working out in the gym, or studying for the bar exam, he’s always given it his best. Even when severe knee pain added to the strain of his missions, he was able to push through the pain. But when his doctor explained that his knee cartilage damage was so extensive, it was keeping him from performing at his desired activity level, Chris knew it was time to change tactics.

Unwilling to give up his active life, Chris researched treatment options with the help of his doctor. Together, they chose MACI, a procedure that would use his own cells to repair his damaged knee cartilage, relieving his pain and getting him back to his active life. 

Learn more about Chris’s journey through rehab and how he made his comeback with the help of MACI.

Individual results may vary.

Chris’s Story

Finding a solution to knee pain due to cartilage damage

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Back to His Best

Chris overcame knee pain and got back in action with the help of MACI

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“MACI impacted me in a lot of ways. By resolving my knee pain, it brought me back to doing what I love; running, biking, and just being active with my family and friends.”

Abby is used to being challenged. As a former college athlete, she’s been competing in sports for most of her life. So when knee pain from damaged knee cartilage took her out of the game, there was no way she was going to be content sitting on the sidelines. 

Working with her doctor, Abby chose MACI, a procedure that used her own cells to repair her damaged knee cartilage. With the guidance of her physical therapist, Abby approached her MACI rehab with the same focus and determination she used on the athletic field. 

Hear more about Abby’s story and how MACI helped her get back to living the active life she loves.

Individual results may vary.

Abby’s Story

An athlete makes her comeback

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Active Again

Abby approached her MACI rehab one milestone at a time

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“Not having to think about going up and down stairs and not having to worry about knee pain in inconvenient places, just months after surgery, is really meaningful.”

As a physician, Courtney likes to work on the cutting edge of medicine. So when she heard MACI could repair her damaged knee cartilage with her own cells, she wanted to learn more—especially since knee issues were interfering with the physical demands of her work.

With the help of her doctor, Courtney decided to move forward with MACI. Motivated to get back to her patients as soon as possible, Courtney worked through MACI rehab one milestone at a time.

Listen to more of Courtney’s story to see how far she’s come after MACI.

Individual results may vary.

Courtney’s Story

An innovative choice to address knee cartilage damage

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How She Came Back to Her Active Lifestyle

Courtney talks about her experience with MACI rehab

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See how MACI helped Nick overcome a knee injury and return to the activity level his lifestyle demands.

The Demands of Service

MACI helped Nick Willis return to the physical aspects of the military.

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After Surgery

Nick Willis gets back into action after his MACI procedure.

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See Karen Mohr’s return to sport with the help of MACI following a knee cartilage injury sustained while trail running.

Getting Back on the Trail

Karen Mohr describes her injury and the decision to choose MACI.

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After Surgery

Karen’s surgery, the immediate post-operative period, and beginning rehabilitation.

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6-Month Milestones

Karen resumes activity and talks about her goals moving forward.

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12+ Months After MACI

Karen’s biggest milestone: a marathoner runs again.

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See how Becky is addressing her chronic knee pain from a cartilage injury sustained playing soccer and her goal of returning to the activities she loves as a fitness enthusiast and mother.

Focusing on Family and Fitness

Becky Dowden, PA-C Physician Assistant, Orthopedics

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Returning to an active lifestyle

A two-year follow-up with Becky Dowden

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Talk with real patients about their experience with MACI

Hear about real personal experiences with knee cartilage damage and MACI. The MACI Mentor Program gives you an opportunity to connect one-on-one with real people who have had the MACI procedure.

It's Your Move

To speak with a MACI Mentor, call 1-888-237-5493 or visit

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Indication and Important Safety Information

Important Safety Information

MACI should not be used if you:

  • are allergic to antibiotics such as gentamicin, or materials that come from cow, pig, or ox;
  • have severe osteoarthritis of the knee, other severe inflammatory conditions, infections or inflammation in the bone joint and other surrounding tissue, or blood clotting conditions;
  • have had knee surgery in the past 6 months, not including surgery for obtaining a cartilage biopsy or a surgical procedure to prepare your knee for a MACI implant;
  • or cannot follow a doctor-prescribed rehabilitation program after your surgery

Consult your doctor if you have cancer in the area of the cartilage biopsy or implant as the safety of MACI is not known in those cases.

Conditions that existed before your surgery, including meniscus tears, joint or ligament instability, or alignment problems should be evaluated and treated before or at the same time as the MACI implant.

MACI is not recommended if you are pregnant.

MACI has not been studied in patients younger than 18 or over 55 years of age.

Common side effects include joint pain, tendonitis, back pain, joint swelling, and joint effusion.

More serious side effects include joint pain, cartilage or meniscus injury, treatment failure, and osteoarthritis.

Please see Full Prescribing Information for more information.


MACI® is made up of your own (autologous) cells that are expanded and placed onto a film that is implanted into the area of the cartilage damage and absorbed back into your own tissue. MACI is used for the repair of symptomatic cartilage damage of the adult knee.

MACI® (autologous cultured chondrocytes on porcine collagen membrane) is made up of your own (autologous) cells that are expanded and placed onto a film that is implanted into the area of the cartilage damage and absorbed back into your own tissue.

MACI is used for the repair of symptomatic cartilage damage of the adult knee.

The amount of MACI applied depends on the size of the cartilage damage. The MACI film is trimmed by your surgeon to match the size and shape of the damage, to ensure the damaged area is completely covered.

Limitations of Use

It is not known whether MACI is effective in joints other than the knee.

It is not known whether MACI is safe or effective in patients over the age of 55 years.