Inclusion Criteria:  Knee Injury Participant Inclusion Criteria:  16-35 years of age Currently live in British Columbia, Canada Experienced a sport-related intra-articular knee injury (i.e., clinical diagnosis of ligament, meniscal, or other intra-articular tibio- or patello-femoral trauma) that required both medical consultation (i.e., physician, physiotherapist, chiropractor, surgeon, or athletic therapist) and disrupted regular sports participation (missed at least one training session or competition) 12-36 months previously.18 Are currently not receiving ongoing health care related to the past knee injury and have no scheduled surgical procedures (any part of the body) that would interfere with exercise during the study. Have daily access to an email address and a computer with internet Are willing to wear an activity tracker during the study  Physiotherapist Participant Inclusion Criteria:  Registered physiotherapist Able to communicate in English Have an email address and daily access to a computer with internet service  Exclusion Criteria:  Knee Injury Participant Exclusion Criteria:  Inability to communicate in English Previous physician diagnosis of index knee osteoarthritis Inflammatory arthritis or systemic condition Lower limb injury, surgery, or intra-articular injection in the past 6-months Current pregnancy Have a pacemaker or other internal medical device  Physiotherapist Participant Exclusion Criteria:  Do not hold a license to practice physiotherapy Unable to communicate in English Do not have an email address or daily access to a computer with internet service