during athletic activity or even constant , rigorous straintypically causesduring athletic activity or even constant , rigorous strain
significant disability potentially leading to reduced levels of physical activitycan causesignificant disability potentially leading to reduced levels of physical activity
by changing direction rapidlycausedby changing direction rapidly
to more than one horror story for fantasy ownersledto more than one horror story for fantasy owners
to knee arthritiscan leadto knee arthritis
to significant knee arthritisleadto significant knee arthritis
instability of the kneecauseinstability of the knee
pain , swelling , and an unstable kneecan causepain , swelling , and an unstable knee