Altered knee joint motion after ACL surgical procedure may contribute to early-onset knee osteoarthritis

Some people who’ve had anterior-cruciate-ligament reconstruction (ACLR), the type of surgical procedure typically carried out on athletes’ knees, might develop early-onset knee osteoarthritis. A brand new research within the Journal of Orthopaedic Analysis signifies that altered knee joint motion after ACLR may very well be a contributing issue. 

The research used a novel dynamic X-ray imaging system to precisely measure knee joint motion throughout strolling in individuals who had undergone ACLR surgical procedure and people with wholesome knees. In contrast with wholesome controls, ACLR sufferers had a better vertical place of the patella and a better location of articular contact between the patella and the femur. A better driving patella within the ACLR sufferers was attributable to a longer-than-normal patellar tendon, the construction connecting the patella to the tibia. A stunning discovering was {that a} increased driving patella was noticed in each the ACLR knee and the unhurt contralateral knee of the ACLR sufferers. 

Investigators suspect {that a} increased driving patella might contribute to the event of knee osteoarthritis by shifting the load bearing areas between the patella and the femur to areas of cartilage unaccustomed to load and leaving beforehand loaded areas unloaded. 

We do not know whether or not a longer-than-normal patellar tendon that resulted in a better driving patella existed previous to the ACL harm or resulted from the ACL harm or ACLR surgical procedure. Additional analysis is required to find out the reason for a longer-than-normal patellar tendon in people who’ve undergone ACLR surgical procedure.”

Marcus G. Pandy, PhD, MEngSc, corresponding writer of the College of Melbourne, Australia