Knee ligament tears can be caused during sports due to a sudden twisting motion. Some athletes happen to re-tear the surgical graft following the reconstruction surgery and rehabilitation. Graft size, sex and age have a significant effect on the odds of an anterior cruciate ligament (ACL) re-tear post reconstruction with a hamstring graft, revealed researchers.
"Female patients under the age of 25 years with a graft size of less than 8 mm have an increased chance of re-tearing their ACL following reconstruction. Another contributing issue to this increased re-tear rate might also be due to pre-disposing factors, including estrogen levels, anatomical differences, and decreased knee strength. More research is needed to further determine the exact causes," said lead author, Duong Nguyen.
‘Female patients under the age of 25 years with a graft size of less than 8 mm have an increased chance of re-tearing their anterior cruciate ligament (ACL) following reconstruction.’
AdvertisementDr. Nguyen and his team, studied a cohort of 503 athletes undergoing primary, autograft hamstring ACL reconstruction. The surgeries were all performed at a single center by a single surgeon between September-December 2012 and were followed for a duration of two years. The average age of the athletes was 27 with 235 females and 268 males taking part in the study. The same surgical technique was used during all of the procedures. Patients were allowed to return to sports participation between six and 12 months post-surgery only if they were pain-free, had equal quadriceps/hamstring strength and if they had graduated from the rehabilitation program.
"Given the results of our study, we feel that surgeons should counsel their younger, female patients accordingly and consider modifying their surgical techniques to utilize larger size grafts and/or rehabilitation strategies to lessen the chance of a re-tear," said Nguyen.
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