Abstract
Introduction: Early tibiofemoral joint (TFJ) osteoarthritis (OA) frequently develops secondary to anterior cruciate ligament reconstruction (ACLR). The few studies that have evaluated patellofemoral joint (PFJ) reported a high prevalence of PFJ OA (∼46%) >7 years post surgery. Notably, these studies only followed up people who had a patellar tendon autograft, which is known to be associated with PFJ morbidity. This study aimed to: (i) describe the prevalence of radiographic PFJ and TFJ OA, 7 years after ACLR using a hamstring tendon autograft (HT); (ii) compare OA symptoms, anterior knee pain symptoms, ACLR outcome and activity levels between people with PFJ OA and those who were free of OA; and (iii) compare the range of knee motion and functional performance between people with PFJ OA and those with no OA.
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