This clinical trial is focused on studying the effects of using a special type of bone transplant called human cancellous bone to help people who have experienced an incomplete meniscal loss. The meniscus is a part of the knee that acts like a cushion between the bones. When part of it is lost, it can cause pain and affect knee function. The trial aims to see if using these bone transplants can improve the function of the meniscus and reduce pain for those affected.

The study will involve participants who have lost part of their meniscus and are experiencing pain in the knee joint. The treatment involves using a sterile allogeneic spongioflex® allograft, which is a type of bone graft from a donor, to replace the missing part of the meniscus. The goal is to improve knee function and reduce pain over time. Participants will be monitored and compared to those who do not receive the treatment to see how effective the procedure is.

Throughout the study, participants will be evaluated at different times, including at the start, and then again after 2 and 5 years. This will help researchers understand how well the treatment works over a longer period. The study will also look at the safety of the procedure by checking for any side effects. Additionally, the study will assess patient satisfaction with the treatment. The trial is expected to continue until 2031, providing valuable insights into the long-term benefits and safety of using bone transplants for meniscal repair.