A kid my son played ball with in TN had his UCL torn during football season. They used a new procedure to repair it.
Here is how the local paper described it:
The Dr. Andrews’ group developed a procedure where McLain’s ligament was adhered back together with a collagen-coated fiber tape and a few sutures. The tape is ultra strong and allows for a much quicker recovery time, typically five months to return to throwing.
The surgery is seen as preferable for young athletes because generally the tendon’s tissue is still strong unlike Major League veterans who have put a lot of stress on their elbows over decades of use and abuse. In those situations, replacing the ligament can be more fruitful.
The kid returned to hitting in the last regular season game - just over 4 months after surgery. He played CF through most of the playoffs and helped lead the team to the state championship.
