The first surgery as part of US clinical trials took place in January 2015 at Ohio State Universitys Wexner Medical Center. Two FDA-approved clinical trials evaluating the implant completed enrollment in June 2018. In September 2019, the manufacturer received breakthrough designation from the U.S. Food and Drug Administration, and the company expected to file for regulatory approval  within the following year. In November 2019, the implant became commercially available in Israel.Other implants include TRAMMPOLIN and Orthonika.Scientists are working to grow an artificial meniscus in the lab. Scientists from Cornell and Columbia universities grew a meniscus inside the knee joint of a sheep using a 3-D printer and the sheeps stem cells. Similarly, researchers at Scripps Research Shiley Center for Orthopaedic Research and Education reported growing a meniscus. Post-surgical rehabilitation
After a successful surgery for treating the destroyed part of the meniscus, patients must follow a rehabilitation program to have the best result. The rehabilitation following a meniscus surgery depends on whether the entire meniscus was removed or repaired. If the destroyed part of the meniscus was removed, patients can usually start walking using a crutch a day or two after surgery. Although each case is different, patients return to their normal activities on average after a few weeks (2 or 3). Still, a completely normal walk will resume gradually, and its not unusual to take 2–3 months for the recovery to reach a level where a patient will walk totally smoothly.
Conservative treatments
Initial treatment may include physical therapy, bracing, anti-inflammatory drugs, or corticosteroid injections to increase flexibility, endurance, and strength.Common anti-inflammatory drugs and painkillers prescribed for meniscus tears include acetaminophen, non-steroidal inflammatory drugs, and corticosteroids.Exercises can strengthen the muscles around the knee, especially the quadriceps. Stronger and bigger muscles will protect the meniscus cartilage by absorbing a part of the weight. The patient may be given paracetamol or anti-inflammatory medications. For patients selecting non-surgical treatment, physical therapy may reduce symptoms of pain and swelling. This type of rehabilitation focuses on maintenance of full range of motion and functional progression without aggravating symptoms. Physical therapists can employ electric stimulation, cold therapy, and ultrasonography. Accelerated rehabilitation programs can be as successful as the conservative program. The program reduces the time the patient spends using crutches and allows weight bearing activities. The less conservative approach allows the patient to apply a small amount of stress while protecting range of motion. It is likely that a patient with a peripheral tear can pursue the accelerated program, while a patient with a larger tear adopts the conservative program. The use of platelet rich plasma (PRP) to aid in the healing process has become widely accepted among US athletes. Although the procedure has grown in popularity, studies assessing the efficacy of PRP treatment have yielded contradictory results. Surgery
Arthroscopy is a surgical technique in which a joint is operated on using an endoscopic camera as opposed to open surgery on the joint. The meniscus can either be repaired or completely removed.