Sydney: Knee reconstruction surgery is not of much help as around 40 percent of people do not return to their previous level of activity or participation in sports, a study reveals.Gradually, the number of people actively participating in sports before being injured drops below 50 percent within seven years of surgery.Doctoral student Clare Ardern, from La Trobe University`s Musculoskeletal Research Centre, followed over 300 people from two to seven years, the American Journal of Sports Medicine reported.Participants had either played football, basketball, netball or soccer before surgery, according to a university statement.
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