3 Surgical Milestones That Restored Lonzo Ball's Left Knee
How Dr. Brian Cole combined a donor meniscus allograft with an osteochondral cartilage transplant to save Lonzo Ball's career after 1,006 days.
When an athlete tears knee meniscus tissue in professional basketball, standard medical care typically calls for a routine arthroscopic cleanup or a minor partial trim. Most players return within six weeks. However, when Lonzo Ball suffered a left meniscus tear in January 2022, two successive arthroscopic surgeries failed to eliminate chronic pain and debilitating swelling. By early 2023, repeated partial removals had stripped away the natural shock absorber entirely. The joint deteriorated into an agonizing bone-on-bone state where the femoral condyle slammed directly against the tibial plateau during every running stride. To save his career, orthopedic surgeons had to attempt a complex dual transplant never previously achieved in high-level team sports.
At Joyful Take, we find medical breakthroughs deeply moving because they turn biological loss into new life. When I examined the surgical case studies published by Dr. Brian Cole of Midwest Orthopaedics at Rush University Medical Center, the biomechanical precision of the procedure was staggering. Rather than implanting artificial metal or plastic components that would permanently end an NBA career, Dr. Cole engineered a living biological restoration. Three distinct surgical milestones allowed Ball to make his historic return after 1,006 days.
1. Osteochondral Allograft Cartilage Transplantation
Articular cartilage is a miraculous biological tissue that possesses zero native blood supply. Because blood does not circulate through articular cartilage, damaged joint surfaces cannot heal or regenerate on their own. Once cartilage wears away, exposed nerve endings in the underlying bone generate excruciating friction. In March 2023, Dr. Cole performed an osteochondral allograft transplantation.
During this intricate operation, surgeons harvested cylindrical plugs of healthy bone and living articular cartilage from a deceased donor. The graft was carefully submerged in chilled saline throughout the shaping process to prevent thermal cell damage. Dr. Cole calibrated the donor bone base to an exact depth between four and six millimeters. This precise measurement balanced structural stability with minimal immunological reactivity, allowing the donor bone to integrate smoothly into Ball's living femur while restoring a frictionless, glass-like articular surface.
2. Meniscus Allograft Replacement via the Bridge-in-Slot Technique
Restoring the smooth joint surface solved only half of the mechanical puzzle. Without a fresh meniscus ring to dissipate high-impact landings, new cartilage plugs would quickly degrade under NBA forces. Dr. Cole performed a concurrent meniscus allograft transplantation using the specialized bridge-in-slot technique. Surgeons milled a keyhole-shaped bone slot into Ball's tibial plateau.
The donor meniscus, still firmly anchored to its native bone bridge, was slid directly into this tibial channel and secured with high-tensile sutures. Because meniscal tissue is composed primarily of a dense fibrocartilaginous collagen matrix rather than cellular tissue, Ball did not require lifelong immunosuppressive drugs. The transplanted meniscus acts as a permanent shock absorber, distributing heavy compressive loads across the entire joint.
3. Biological Integration and the Gift of Donor Alex Reinhardt
The final milestone unfolded across eighteen months of progressive, structured physical therapy. The healing occurred in three distinct biological phases. First, Ball spent two full months strictly non-weight bearing, using continuous passive motion machines for up to six hours daily to stimulate synovial fluid circulation without stressing the new grafts.
Second, osteoclasts and osteoblasts slowly remodeled the subchondral bone interface, establishing living vascular connections into the donor bone plugs. Third, Ball progressed from aquatic treadmill running to explosive lateral agility drills on NBA hardwood.
In our view at Joyful Take, the most profound humane detail of this medical odyssey surfaced in early 2025. Ball hosted the parents of his donor, a twenty-year-old student and athlete named Alex Reinhardt, courtside at a Chicago Bulls game to thank them personally for the extraordinary gift of tissue that restored his life.
Sources
Every factual claim above traces to one of these. Links open in a new tab.
- Dr. Brian Cole Performs Groundbreaking Cartilage Restoration on Lonzo Ball
- How Dr. Brian Cole Guided Lonzo Ball's Historic Knee Recovery
- Lonzo Ball undergoes third knee surgery including cartilage transplant
- Surgical Techniques in Meniscus Transplantation and Cartilage Repair
- Lonzo Ball hosts family of organ donor Alex Reinhardt at United Center
- How Donor Alex Reinhardt Helped Save Lonzo Ball's Career
