Objectives: This study investigates the most common online patient questions pertaining to posterior cruciate ligament (PCL) injuries and the quality of the websites providing information.
Methods: Four PCL search queries were entered into the Google Web Search. Questions under the 'People also ask' tab were expanded in order and 100 results for each query were included (400 total). Questions were categorized based on Rothwell's Classification of Questions (Fact, Policy, Value). Websites were categorized by source (Academic, Commercial, Government, Medical Practice, Single Surgeon Personal, Social Media). Website quality was evaluated based on the Journal of the American Medical Association (JAMA) Benchmark Criteria. Pearson's chi-squared was used to assess categorical data. Cohen's kappa was used to assess inter-rater reliability.
Results: Most questions fell into the Rothwell Fact category (54.3%). The most common question topics were Diagnosis/Evaluation (18.0%), Indications/Management (15.5%), and Timeline of Recovery (15.3%). The least common question topics were Technical Details of Procedure (1.5%), Cost (0.5%), and Longevity (0.5%). The most common websites were Medical Practice (31.8%) and Commercial (24.3%), while the least common were Government (8.5%) and Social Media (1.5%). The average JAMA score for websites was 1.49 ± 1.36. Government websites had the highest JAMA score (3.00 ± 1.26) and constituted 42.5% of all websites with a score of 4/4. Comparatively, Single Surgeon Personal websites had the lowest JAMA score (0.76 ± 0.87, range [0-2]). PubMed articles constituted 70.6% (24/34) of Government websites, 70.8% (17/24) had a JAMA score of 4 and 20.8% (5/24) had a score of 3.
Conclusion: Patients search the internet for information regarding diagnosis, treatment, and recovery of PCL injuries and are less interested in the details of the procedure, cost, and longevity of treatment. The low JAMA score reflects the heterogenous quality and transparency of online information. Physicians can use this information to help guide patient expectations pre- and post-operatively.
Keywords: PCL; Posterior cruciate ligament; athletics; injury; knee; sports; trauma.