Cartilage Regrowth & Regeneration (MACI)

About Cartilage Regrowth & Regeneration (MACI)

Cartilage Regrowth and Regeneration

How Does Cartilage Regrowth & Regeneration Work?

MACI cartilage regeneration is done in a staged approach:

  1. Dr. Cahill has a consultation with the patient to determine whether cartilage regeneration is the right approach for the patient’s problem.
  2. Dr. Cahill does a small arthroscopic procedure to take a biopsy of the patient’s healthy cartilage.
  3. The cartilage biopsy is shipped to an FDA-licensed lab to be processed.
  4. The patient’s cartilage cells are expanded in the lab to create a collagen membrane that will act as a patch for the patient’s damaged cartilage. This MACI implant is sent to Dr. Cahill when the patient is ready for surgery.
  5. Dr. Cahill will shape the MACI implant so that it fits within the area of cartilage damage in the knee, then implants it in the knee using minimally invasive arthroscopic techniques.

Though this procedure is done in a staged approach, it is minimally invasive, which makes recovery easier on the patient.

Benefits of Cartilage Regrowth & Regeneration

Cartilage regrowth and regeneration with MACI offers many benefits to patients with chronic knee pain caused by cartilage damage:

  • MACI uses the patient’s own cartilage cells to regrow and regenerate cartilage.
  • The procedure is minimally invasive, which often minimizes pain in recovery.
  • It is more effective than older cartilage regrowth techniques, which often create scar tissue rather than new cartilage.
  • Cartilage regeneration reduces knee pain caused by damaged cartilage, allowing patients to resume more active lifestyles with improved knee function.

Recovery & Long-Term Results of Cartilage Regrowth & Regeneration

Following the procedure with Dr. Cahill to place the MACI implant, the knee is immobilized with a brace. Patients must take care to protect the knee and limit weightbearing for the first 6 weeks after the procedure to ensure success.

Dr. Cahill will prescribe a recovery plan to help you achieve the best possible results from your procedure. This includes a rehabilitation program, beginning with passive motion and graduating to active exercises to regain motion and strength in the knee. Dr. Cahill will advise when it is safe to return to normal activities.

After the MACI implant is placed, the cells expand and grow to produce new cartilage to fill in the damaged area. This process can take up to a year to complete. By the time the cartilage regrowth process is complete, patients are able to resume all sports and recreational activities.

Cartilage Regrowth & Regeneration in Hackensack, NJ

Dr. James Cahill was involved in the early research for cartilage regrowth and regeneration techniques, and also frequently lectures about this procedure. With over 20 years of experience in orthopedic surgery, Dr. Cahill believes this technique provides the best results for patients with cartilage damage in the knees. If you are interested in learning more about cartilage regrowth and regeneration or would like to schedule a consultation with Dr. Cahill, please call our office at (201) 489-0022.

Contact Us


87 Summit Avenue
Hackensack, NJ 07601
Phone: (201) 489-0022


140 North State Route 17, Suite 255
Paramus, NJ 07652
Phone: (201) 261-5501


111 Dean Drive, Suite 1 North
Tenafly, NJ 07670
Phone: (201) 489-0022
Phone lines open 24/7 for on-call emergency care.