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Some people who’ve had anterior-cruciate-ligament reconstruction (ACLR), the type of surgical procedure typically carried out on athletes’ knees, could 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.
The next driving patella within the ACLR sufferers was attributable to a longer-than-normal patellar tendon, the construction connecting the patella to the tibia. A shocking 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 could 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 don’t know whether a longer-than-normal patellar tendon that resulted in a higher riding patella existed prior to the ACL injury or resulted from the ACL injury or ACLR surgery. Further research is needed to determine the cause of a longer-than-normal patellar tendon in individuals who have undergone ACLR surgery,” stated corresponding creator Marcus G. Pandy, Ph.D., MEngSc, of the College of Melbourne, in Australia.
Extra info:
A high-riding patella is a characteristic of knee joint movement throughout gait after ACL reconstruction, Journal of Orthopaedic Analysis (2025). DOI: 10.1002/jor.26062
Quotation:
How would possibly ACL surgical procedure improve the chance of knee osteoarthritis? (2025, March 19)
retrieved 19 March 2025
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