Adding a collagen scaffold to stitched-up knee ligaments in pigs didn't make the knee wobble less when bent at different angles compared to just stitching it up.

The scaffold didn't make the repaired ligament stronger in pigs—it broke at the same force as stitches alone.

In pigs, adding a collagen scaffold to stitched ACL repairs didn't make the ligament stronger or stiffer than just stitching it.

Pigs with scaffold-augmented ACL repairs had the same knee movement and stability tests as those with just stitches.

Under the microscope, the healed ligaments in pigs looked the same whether they had a collagen scaffold or not.

The collagen scaffold by itself didn't help heal the knee ligament in pigs—other biological factors like platelets might be needed.