Patellat tendon avulsion in 12 year post tkr after a fall

Managed with percutanoeus quads to tibia by pass with neoligament with full function at 6 weeks.Using hamstring in the 90s caused ext lag  and decreased strength. started with inquinal hernia mesh for ext tendon dysfunction in early 2000 and finally we have a simpler reproducible  solution for there extraarticular injuries