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Job Title
Clinical Research Coordinator
Academic Rank
Staff/Research Assistant
Department
Orthopedic Surgery
Authors
Jillian Mazzocca, Yuchiao Chang, Abigail Smith, Olivia Gordon, Jeffrey Katz, Elizabeth Matzkin
Principal Investigator
Elizabeth Matzkin
Categories
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The purpose of this study is to evaluate how patients rate their knee confidence after ACL injury, when confidence returns after ACL reconstruction (ACLR), what demographic factors are associated with confidence and how confidence relates to return-to-sport (RTS). We hypothesize that knee confidence will increase postoperatively with time.
Participants were prospectively enrolled in a global database and were included in the study if they had undergone an ACLR between 2012 and 2023 and completed patient reported outcome measures (PROMs) preoperatively as well as at 1- and 2-years postoperatively. This study utilized KOOS Question 41 in the ‘Quality of Life’ subscale, to measure subjects’ confidence in their knee.
242 patients met inclusion criteria and 60.7% (147) patients were female. Patients with a pre-operative lack of knee confidence had lower KOOS Sport/Rec (70.3 vs. 80.9, p=0.003) and MARS (6.8 vs. 8.4, p=0.13) at 1 year postoperatively, compared to those without lack of knee confidence.
Pre-operatively 85.1% of patients reported a lack of confidence in their knee. Confidence improved after ACLR with 38.7% reporting a lack of confidence at 6 months and decreasing to 34.7% at 1 year. At 2 years, 24% of post-operative ACLR patients still lacked knee confidence.
Anterior cruciate ligament (ACL) ruptures affect over 200,000 people per year in the United States. Despite the surgical success of ACL reconstruction (ACLR), only 31% of athletes return to their previous level of sport. There has been increased interest in the association between psychological readiness and satisfying return to sport (RTS) criteria. Understanding the effect of psychological factors is essential for the development of a more successful ACL rehabilitation treatment, with the goal of increasing the rate of RTS.
Our purpose is to evaluate how patients rate their knee confidence after ACL injury and how confidence relates to RTS. We hypothesize that confidence in one’s knee will increase postoperatively with time.
Participants were included if they had completed patient reported outcome measures (PROMs) preoperatively as well as at 1- and 2-years postoperatively.
242 patients met inclusion criteria and 60.7% patients were female. We did not observe a significant association between patient demographics among the ‘no confidence’ and ‘confidence’ groups at 6 months and 1-year follow-up.
Pre-operatively 85.1% of patients reported a lack of confidence in their knee. Confidence improved after ACLR with 38.7% reporting a lack of confidence at 6 months and decreasing to 34.7% at 1 year.
